Research libraryUtilisation Decides
Chapter 12 of 14 · Part IV · Draft web edition
A technically balanced line still fails when learned operators are absent, hours are unsustainable or electricity interrupts production.
The cloth is woven from this chapter's 5 exhibits: each weft is one exhibit's own data, normalised; each warp group is a section. The probe reads the exhibit's own value where it crosses. Procedural visualisation, not a measurement.
Read-out
Sourced from UNU-WIDER panel study of Ethiopian manufacturing workers, mainly in textiles and garments (S39). Almost one-third left before six months (plotted as 33.3% departed vs 66.7% retained from a 100% starting cohort) and half left within one year (50.0% departed). This is empirical sector evidence from Ethiopia, not a Cameroon forecast.
Unit: percent of cohort. Status: sourced. Sources: S39.
Overture · 1 min
A garment factory cannot sustain a line balance that violates its human and infrastructure envelope.[S14] Even when engineers establish clean standard minute values, sequence tasks accurately, limit work in progress and contain defects at source, the real ceiling on Overall Equipment Effectiveness (OEE) and good throughput is set by the people who staff the workstations and the electrical system that powers the machines.[S04] In labour-intensive sewing operations, overall performance depends primarily on employee performance and attendance rather than autonomous machine speed.[S14] Equally, sewing machines, cutting tables, fusing presses and air compressors cannot convert operator skill into good garments when grid electricity fails.[S35] Treating workforce stability and power reliability as background assumptions produces capacity plans that look achievable in a spreadsheet and fail on the floor.[S36]
In Cameroon, where national policy targets raising local cotton processing from roughly 5 per cent of raw fibre output to 50 per cent by 2030, reported capacity utilisation across incumbent textile plants ranged from 10.83 per cent to 48.9 per cent in July 2023.[R06][R07][R12] Closing that utilisation gap requires bringing statutory working hours, overtime fatigue, frontline supervision, operator turnover, workstation ergonomics, electrical outages and buyer order planning inside the formal capacity model.[S33][S36][S39] This chapter defines how human and electrical constraints govern the line and shows how GFT's Cameroon textile programme derates nominal capacity into a deliverable schedule.[S04]
12.1
Related · chapter 135 paragraphs step it
Read-out
Sourced from the shared register: Cameroon SMIG raised to XAF 43,969 per month from 23 February 2024 (about US$76, R14); Cambodia garment minimum wage US$204 per month for 2024 (R17); Cameroon cross-sector average salary about US$359 per month (R15). Currency conversions are approximate estimates (R32). Monthly wages do not adjust for earned standard minutes, skill or quality.
Unit: US$ per month (approximate). Status: sourced. Sources: R14, R15, R17, R32.
Read this exhibit in its chapter ↗Every valid calculation of available production time begins with the legal and physiological limits of the working week.[S33] In OEE accounting and standard-minute planning, the denominator starts with scheduled shift hours before subtracting planned breaks, maintenance and unplanned downtime.[S01][S04] If a schedule assumes an unlawful or unsustainable time base, every downstream indicator of availability, efficiency and unit cost is distorted.[S01] Capacity planning must anchor its baseline roster in statutory ordinary hours and treat any extension as a constrained, separately costed exception.[S33]
In Cameroon, Law No. 92/007 of 14 August 1992 establishing the Labour Code states that statutory hours of work in all public and private non-agricultural establishments may not exceed 40 hours per week.[S33] Shared labour-market records for Cameroon likewise note the standard 40-hour working week alongside a 48-hour maximum ceiling and an overtime wage premium of 1.2 times the ordinary hourly rate, within a labour market where informal employment accounts for roughly 90 per cent of total employment.[R16] Where an eight-hour daily shift across five working days provides 2,400 gross scheduled minutes per week per operator, planned non-production intervals such as meal breaks, ergonomic recovery pauses, daily huddles and routine machine cleaning must be deducted explicitly to establish planned production time.[S01][S26]
Separating statutory ordinary time from authorised overtime is equally important for unit-cost governance.[R14][R16] Cameroon's statutory minimum wage (SMIG) rose from XAF 41,875 per month in 2023 to XAF 43,969 per month from 23 February 2024, roughly US$76 per month (a 5 per cent rise), whereas average monthly earnings across formal sectors sit near US$359 and the 2024 garment-sector minimum wage benchmark in Cambodia stood at US$204 per month.[R14][R15][R17] Effective labour cost per good garment is governed by earned standard minutes produced during paid hours.[S13][R14] If a plant relies on overtime hours paid at a 1.2 times premium while fatigued operators produce fewer earned minutes per hour, labour cost per good garment rises from both sides of the fraction.[R16][S41] This analysis is an engineering framework for capacity planning and is not legal, tax or investment advice; sponsors must obtain local legal review when structuring rosters and overtime authorisations under Cameroonian law.[S33]
Multiplying 40 weekly hours by 60 minutes and assuming 2,400 productive minutes per operator per week forces routine human and operational needs to appear as unexplained losses.[S01][S04] Operators cannot maintain a constant sewing rhythm across eight hours without physiological recovery, needle and bobbin changes, bundle handling and supervisory alignment.[S13][S26]
In GFT's Cameroon textile programme, an eight-hour day (480 rostered minutes) deducts rest periods, a ten-minute shift huddle, five minutes of autonomous machine care and ergonomic micro-pauses.[S02][S26] Declaring an illustrative net planned window of 430 to 445 minutes per shift as the availability base aligns the takt denominator with safe sewing time.[S04][S26] Any requirement exceeding those net ordinary minutes must trigger a review of line balance, constraint staffing or order release rather than an informal instruction to work late.[S30][S41]
12.3
Factory planners under delivery pressure often treat overtime as a linear capacity buffer.[S41] Extending an eight-hour shift by two hours appears in a naive spreadsheet to add 25 per cent to daily availability and output, using this illustrative ratio as a direct multiplier. Empirical evidence refutes that assumption.[S41] Extended hours alter physiology, concentration and attendance, eroding the hourly production rate and increasing defects during both the extra hours and subsequent regular shifts.[S41]
…a naive spreadsheet to add 25 per cent to daily availability and output
illustrative
Research published by the International Labour Organization and International Finance Corporation Better Work programme on excessive overtime, workers and productivity concludes that extending working hours does not in general yield proportionate increases in total output, and may even lead to an absolute reduction in total output in the long run.[S41] As weekly hours climb beyond the 40-hour statutory baseline, coordination slows, micro-stoppages lengthen and seam errors increase.[S04][S33][S41] In OEE terms, an apparent increase in scheduled time is offset by declines in performance and quality rates.[S04]
Chronic overtime also corrupts floor pacing.[S41] When operators expect regular late working, daytime pacing adjusts downward so workers conserve energy for the extended shift and secure the overtime premium.[R16][S41] What looks like an afternoon bottleneck requiring two hours of evening overtime is often a cycle in which fatigue slows morning paces, slower paces create midday starvations, and evening overtime produces tired workers who arrive late or absent the next day.[S20][S41]
A sewing defect created during the ninth or tenth hour of a shift wastes more than the standard minutes of the station that stitched the faulty seam.[S04][S13][S21] In apparel OEE monitoring at Company X, lock-stitch repairs and stains accounted for 54.77 per cent of all defects and the top five repair categories represented 87.56 per cent of total quality losses, requiring garments to be unpicked, re-sewn, re-inspected and re-pressed.[S09] Unpicking a lock-stitch seam without damaging fabric takes two to three times longer than the original illustrative operation SMV, pulling skilled operators away from primary flow.[S09][S13]
In an illustrative comparison where a line operating for two overtime hours pays 1.2 times the normal wage while achieving 70 per cent of standard hourly pace and double its normal rework rate, labour cost per good garment during those extra hours rises by more than 70 per cent above the ordinary-hour baseline, before counting extra electricity and overhead.[R16][S34][S41] GFT therefore treats recurring overtime as a symptom of an unresolved balance, quality or scheduling failure.[S30][S41]
12.5
Read-out · sourced
Sourced from the ILO final report on the Factory Improvement Toolset in the Asian garment sector (S12). Programme-level aggregate results across participating factories; outcomes reflect combined balancing, WIP and quality interventions and are not a standalone forecast for Cameroon.
Unit: per cent change in participating Asian garment sewing rooms. Status: sourced. Sources: S12.
Read this exhibit in chapter 11 ↗A sewing line does not balance itself once the operation bulletin is posted.[S12][S13] Between the engineered standard and the finished garment stands the line supervisor.[S40] In every shift, the supervisor verifies attendance, reallocates tasks when a machinist is absent, checks folders and tension guides, spots upstream queues before they starve the constraint, coaches operators and resolves quality holds.[S12][S20][S26] Where supervision is weak or coercive, standards decay within days into informal workarounds.[S26][S40]
Empirical evidence shows that frontline supervisory skill is a quantifiable determinant of productivity, quality and retention.[S40][S1201] Assessments by Tufts University researchers on the ILO and IFC Better Work Supervisory Skills Training programme found that when female supervisors completed the three-day training in communication, time management, work allocation and professional conduct, line productivity increased by 22 per cent compared with lines led by untrained supervisors.[S1201] Across seven countries where more than 5,850 supervisors participated over two years, training replaced shouting with clear instruction and bottleneck resolution.[S1201]
Programme evidence from East Africa and Asia reinforces these findings.[S12][S40] In its 2023 report covering 2022 data, Better Work Ethiopia documented improved productivity, higher quality, better workplace organisation and reduced absenteeism on lines led by newly trained supervisors.[S40] Similarly, the ILO SCORE and SIRAYE intervention at Edget Garment in Ethiopia paired workplace cooperation and coaching with line balancing, lifting balance efficiency from 24 per cent to 75 per cent and raising daily output from 50 to 120 pieces.[S37] Across Asian garment plants, the ILO Factory Improvement Toolset combined operation bulletins, SMV measurement, hourly balancing and bottleneck management to lift line achievement by 9.49 per cent while reducing work in progress and defects per hundred units by 22 per cent.[S12]
Unscheduled absence is an immediate shock to precedence and cycle balance.[S15][S17] If a 30-operator line loses three machinists at roll call, an untrained supervisor often reacts by shouting or assigning an unverified novice to a complex operation such as collar attachment.[S17][S19] The novice struggles, builds an upstream pile and starves downstream stations, causing throughput to drop by 30 to 40 per cent in an illustrative cascade triggered by a 10 per cent attendance loss.[S20][S30]
A trained supervisor manages the shock through a structured protocol.[S12][S40] Supportive leadership lowers stress-induced absenteeism, reducing missing operators at shift start.[S40] When an absence occurs, the supervisor consults the skill matrix to redeploy a cross-trained utility operator to the constraint while combining or splitting non-constraint operations so no station exceeds pitch or takt time.[S16][S17] During hourly checks, the supervisor investigates variances using root-cause inquiry rather than blame, keeping operators engaged in reporting thread breakages or cutting flaws early.[S09][S29][S40] In GFT's Cameroon textile programme, supervisor preparation is budgeted as core capacity alongside machines, with workforce pipelines detailed in white paper wp09.[S40][S1201]
12.7
Related · chapter 068 paragraphs step it
Read-out
Sourced endpoints from S18: Manual Machine Group (MMG) average capacity increased from 60.6 per cent at initial tracking to 79.4 per cent after six weeks (+18.8 percentage points, or 31.0 per cent relative gain). Single-study scope; not a universal forecast for all garment styles or cohorts.
Unit: average operator capacity (per cent). Status: sourced. Sources: S18.
Read this exhibit in its chapter ↗Even well-supervised lines face a structural capacity leak when trained operators leave.[S39] Unlike an automated spinning frame whose cycle time remains fixed, a sewing operator acquires speed and consistency through weeks of sensorimotor learning on specific fabrics, seams and attachments.[S18][S19] High attrition destroys a factory's stock of standard-minute capability and forces the line back onto the low-output portion of the learning curve.[S18][S39]
A panel study published by the United Nations University World Institute for Development Economics Research (UNU-WIDER) examining labour turnover and workers' well-being in the Ethiopian manufacturing industry, predominantly in textiles and garments, found that almost one-third of studied workers left before completing their first six months and half left within the first year.[S39] Losing roughly 33 per cent of a cohort within six months and 50 per cent within twelve months means a plant must continuously recruit replacements merely to keep seats occupied.[S39]
To see how turnover depresses the utilisation ceiling, attrition rates must be combined with learning curves.[S18][S39] In an experimental study of manual sewing-machine operators in apparel manufacturing, average capacity attainment of the manual-machine group rose from 60.6 per cent to 79.4 per cent over six weeks, a gain of 18.8 percentage points (nearly 20 per cent) without any change in hardware or layout.[S18] Whenever an experienced operator working near 80 per cent capacity is replaced by a recruit starting near 60 per cent capacity, the station loses roughly one-quarter of its effective rate for six weeks.[S17][S18]
The cohort erosion pattern documented in the UNU-WIDER panel is shown in Exhibit 56.[S39]
As Exhibit 56 shows, losing one-third of a cohort within six months and half within twelve months turns line balancing into a continuous replacement struggle.[S39] While the UNU-WIDER study reflects Ethiopian conditions rather than a measured Cameroon baseline, it warns greenfield programmes in Cameroon, where announced projects such as Camtext SA envision roughly 12,000 jobs at Dibamba and 3,000 at Garoua and formal training incidence across surveyed firms stands at 24.0 per cent.[R10][S1202] What Exhibit 56 cannot establish is the exact attrition rate a Cameroonian plant will experience; that depends on local wages relative to the XAF 43,969 monthly SMIG and informal alternatives, transport, supervision and onboarding.[R14][R16][S40]
Because sewing lines are serially dependent systems governed by their slowest station, turnover damage depends on where departure occurs.[S15][S30] Garment balancing research rates worker performance by task from 0 (no skill at all) to 1.5 (fully skilled), while remote power-monitoring research identifies task level of difficulty (LD) and operator level of skill (LS) as the primary variables governing line design and staffing.[S17][S19] If attrition removes the sole fully skilled operator (rated near 1.5) at a high-difficulty constraint operation, line output collapses to the replacement's learning-curve pace.[S17][S18][S30]
Workforce planning must therefore integrate three operational controls:
Interlude · the cloth half-woven
Woven: sections 12.0 to 12.7Still to weave: 12.9 to 12.14
Read-out
Sourced from World Bank research and Enterprise Survey indicators: unconditional average revenue-based total factor productivity (TFP) gap for outage-exposed manufacturers across 84 developing countries, 2006 to 2019 (S36); share of surveyed Cameroon firms experiencing electrical outages in 2024 (S0301); and average value lost due to electrical outages as a share of sales for affected Cameroon firms in 2024 (S0302). Cross-country and sector-aggregate figures are context, not a single-factory garment forecast.
Unit: percent. Status: sourced. Sources: S36, S0301, S0302.
Read this exhibit in its chapter ↗12.9
Time-study engineers sometimes mistake the fastest cycle an operator demonstrates during a five-minute stopwatch observation for a sustainable eight-hour standard.[S15][S26] The human body is a biomechanical system subject to cumulative muscular fatigue, postural strain and repetitive-motion injury.[S26][S38] When a workstation forces an operator to hunch over an angled needle plate, reach excessively for bundles, twist the spine or stand on bare concrete all shift, cycle time degrades and health risks accumulate.[S26][S38]
A 2025 comparative analysis of sitting and standing workstations in Ethiopian garment manufacturing published in the International Journal of Human Factors and Ergonomics highlights that sewing operator safety is vital in the clothing industry and that poor workstation ergonomics cause long-term health risks.[S38] Whether a line uses seated tables or standing cells, mismatches between operator anthropometry, table height, pedal placement and material chutes generate musculoskeletal disorders in the neck, shoulders, wrists and back.[S38] Standardised work in lean manufacturing explicitly includes documenting the process to reduce injuries and strain alongside variability.[S26]
Ergonomic strain enters the utilisation equation through all three OEE components and turnover.[S04][S38][S39] Discomfort causes micro-pauses as operators stretch or shift posture, depressing afternoon performance.[S04][S38] Muscular tremor and visual fatigue from poor lighting increase seam wander, lowering first-pass quality.[S04][S09] Chronic pain drives sickness absence and early resignations, accelerating turnover.[S38][S39]
An engineered Standard Minute Value is valid only when its method description and relaxation allowances reflect an ergonomically safe workstation.[S13][S26][S38] When calculating garment SMV as the sum of operation SMVs, engineers add basic time to allowances for personal needs, fatigue recovery and unavoidable delay.[S13] Copying synthetic time standards while providing non-adjustable stools and poorly positioned racks leaves the fatigue allowance too small for actual recovery.[S13][S38]
Before locking an operation bulletin, engineers should verify four parameters at every station:
12.11
Read-out · sourced
Sourced from World Bank 84-country manufacturing study 2006 to 2019 (S36) and World Bank Enterprise Surveys Cameroon 2024 Country Profile published 2025 (S1202). The 9% TFP gap is a multi-country average across 84 developing economies, not a Cameroon-only econometric estimate.
Unit: reported survey and econometric indicators. Status: sourced. Sources: S36, S1202.
Institutional diagnostics and firm surveys establish that electrical instability is a binding constraint on Cameroonian manufacturing.[S35][S1202] The International Finance Corporation's Country Private Sector Diagnostic for Cameroon states directly that regarding access to electricity, energy supply is limited and unreliable.[S35] Data from the World Bank Enterprise Surveys Cameroon 2024 Country Profile quantify this disruption: 93.3 per cent of surveyed firms in Cameroon report experiencing electrical outages, compared with 69.7 per cent across Sub-Saharan Africa and 55.0 per cent across lower-middle-income economies.[S1202] Surveyed Cameroonian establishments experience an average of 10.4 electrical outages in a typical month (10.6 for small firms, 9.4 for medium firms and 11.8 for large firms with 100 or more employees), nearly double the lower-middle-income average of 5.3 outages per month.[S1202] Moreover, 25.3 per cent of large firms in Cameroon identify electricity as their single biggest obstacle, ahead of political instability (19.7 per cent) and access to finance (11.3 per cent).[S1202]
World Bank Development Research Group analysis across 84 countries from 2006 to 2019 shows that power outages negatively and significantly affect revenue-based total factor productivity, with outage-exposed manufacturing firms exhibiting a 9 per cent lower unconditional average productivity than non-exposed firms.[S36] As the World Bank's Cameroon 2024 profile notes, inadequate electricity provision can increase costs, disrupt production and reduce profitability.[S1202]
The indicators connecting electrical unreliability to productivity and Cameroonian operating conditions are summarised in Exhibit 57 and Exhibit 58.[S36][S1202]
To place Cameroon's electrical exposure in comparative perspective, Exhibit 58 ranks the share of firms experiencing electrical outages by firm size tier in Cameroon against regional and income-group benchmarks from the same World Bank survey.[S1202]
Read-out
Sourced from World Bank Enterprise Surveys Cameroon 2024 Country Profile Appendix (S1202). Covers formal non-agricultural private firms with 5 or more employees.
Unit: percent of surveyed firms. Status: sourced. Sources: S1202.
Together, Exhibit 57 and Exhibit 58 show why a Cameroonian garment plant cannot treat electricity as an external utility issue.[S36][S1202] Even among large establishments with 100 or more workers, 77.9 per cent experience outages at an average of 11.8 outages per typical month.[S1202] However, these survey aggregates do not specify the exact duration or voltage-sag profile at a specific feeder in Douala, Dibamba or Garoua; each factory must log its own feeder events at the shift boundary.[R10][S1202]
In an apparel OEE loss tree, an electrical outage is more than the raw minutes during which the feeder is dead.[S02][S04] Total Productive Maintenance (TPM) identifies startup and restart losses alongside breakdowns, setup slowdowns, short stoppages and quality defects inside the six big losses.[S02] When grid power drops on a running floor, three losses occur:
Mitigating interruptions intersects with Cameroon's electricity tariff structure and efficiency discipline.[S34][S43] Under Decision No. 00000427 of 12 December 2022 issued by Cameroon's electricity regulator (ARSEL) fixing medium-voltage (MT) tariffs for ENEO customers, billing combines two additive terms: a fixed monthly charge per kilowatt of subscribed demand and a variable charge per kilowatt-hour across time-of-day bands.[S34] Because the fixed demand charge accrues regardless of output, low utilisation and power stoppages raise the fixed electricity cost absorbed by each good garment.[S34][S44]
UNIDO's industrial energy case study at Lotus Garments in Egypt establishes that a garment plant must optimise its energy management system through efficiency measures before investing in renewable or backup power applications.[S43] Sizing solar, battery storage or backup generators around an inefficient load wastes capital on compressed-air leaks, uninsulated steam pipes and idling motors.[S43][S44] Eliminating base-load waste, fitting servo motors and isolating critical bottleneck circuits on uninterruptible power supplies shrinks the backup capacity required to keep the constraint moving.[S30][S43] Detailed microgrid sizing remains with white paper wp07 and GFT's solar-storage tool, while unit-cost accounting is expanded in Chapter 13.[S34][S43]
12.14
Statutory 40h roster base
Statutory 40h roster base: Direct plant management control 9, Sustained throughput protection 7.8. Quadrant: Core plant operating envelope · illustrative
A plant’s ability to maintain a 40-hour roster, protect ergonomics, avoid chronic overtime and schedule energy-intensive tasks outside peak grid-vulnerability windows depends on how customer orders enter the system.
Supervisor coaching cadence
Supervisor coaching cadence: Direct plant management control 8.4, Sustained throughput protection 8.8. Quadrant: Core plant operating envelope · illustrative
Cross-trained relief pool
Cross-trained relief pool: Direct plant management control 7.8, Sustained throughput protection 8.5. Quadrant: Core plant operating envelope · illustrative
Ergonomic station calibration
Ergonomic station calibration: Direct plant management control 8.6, Sustained throughput protection 7.2. Quadrant: Core plant operating envelope · illustrative
Constraint backup power & UPS
Constraint backup power & UPS: Direct plant management control 6.5, Sustained throughput protection 9.2. Quadrant: Core plant operating envelope · illustrative
Advance buyer peak smoothing
Advance buyer peak smoothing: Direct plant management control 3.8, Sustained throughput protection 8.1. Quadrant: External and commercial mitigation · illustrative
The method behind it: Capacity derating boundary and multiplicative reconciliation.
Illustrative GFT planning matrix scoring six operational envelope controls by degree of direct in-plant management control (x-axis, 0 to 10) and protective impact on sustained good throughput (y-axis, 0 to 10). Conceptual basis drawn from statutory hours (S33), power reliability (S35), ergonomics (S38) and turnover dynamics (S39). Scores are illustrative design judgments, not measured factory outcomes.
Unit: illustrative planning score (0 to 10). Status: illustrative. Sources: S33, S35, S38, S39. Illustrative figures are teaching examples, not measured factory results.
12.14 · the bodyExhibit 59 above; its figures are illustrative where marked.
A plant's ability to maintain a 40-hour roster, protect ergonomics, avoid chronic overtime and schedule energy-intensive tasks outside peak grid-vulnerability windows depends on how customer orders enter the system.[S33][S41][S42] When commercial teams accept volatile orders with compressed lead times and uncoordinated peaks, they inject surges into the sewing room that no internal balancing algorithm can absorb smoothly.[S22][S42]
A plant’s ability to maintain a 40-hour roster
S33, S41, S42
International Labour Office research on purchasing practices in global garment supply chains documents that erratic buyer ordering and last-minute changes drive excessive overtime and compliance failures, while noting that some companies plan their orders, lead times and production peaks in advance with their suppliers.[S42] Sharing capacity forecasts, locking specifications before the cut date and smoothing order peaks allow the factory to stabilise takt time and run steady shifts.[S15][S42]
MIT operations teaching highlights that Little's Law strictly applies to long-term averages of stable systems that are not starting, stopping or surging, and that waiting time rises nonlinearly as capacity utilisation approaches saturation.[S22][S23] Accepting an order peak that pushes required weekly hours past the plant's derated ceiling causes queues to explode, work in progress to age and defect rates to climb.[S20][S23][S41]
The planning framework integrating statutory hours, human capability, ergonomic safety and electrical reliability is mapped in Exhibit 59.[S33][S35][S38][S39]
As Exhibit 59 shows, five of the six controls sit under direct plant control: enforcing the 40-hour statutory roster, coaching supervisors, maintaining a cross-trained relief pool, calibrating ergonomics and protecting constraints with backup power.[S33][S35][S38][S39] Advance buyer peak smoothing sits in the upper-left quadrant because it requires commercial negotiation, yet its high vertical position reflects how strongly order smoothing protects internal flow.[S41][S42] Because Exhibit 59 is an illustrative model, its coordinates guide prioritisation rather than asserting universal elasticities.
The sequential derating bridge from the worked example is presented in Exhibit 60.[S04][S36][S39]
As Exhibit 60 makes clear, three moderate constraints (10 per cent power loss, 15 per cent skill and absence loss and 5 per cent quality loss) compound multiplicatively to remove 273 pieces per 1,000 nominal units, reducing deliverable output by 27.3 per cent.[S04] A live factory must replace these illustrative percentages with measured shift averages before setting order caps.[S01][S04]
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43 sources · 342 citation marks on this pageMost cited: S04, 29 times
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R06 · Grade C · inherited record
Inherited evidence R06
About 95 percent of cotton fibre exported raw against 5 percent processed locally; industrialisation target of 50 percent local processing.
Publication date unrecorded. Inherited source-text record. The original publication has not been independently reopened for this web edition.
R07 · Grade C · inherited record
Inherited evidence R07
SND30 restates the 50 percent local-processing target by 2030.
Publication date unrecorded. Inherited source-text record. The original publication has not been independently reopened for this web edition.
R10 · Grade C · inherited record
Inherited evidence R10
Camtext SA: 12,000 t a year processed; about 12,000 jobs at the Dibamba hub and 3,000 at Garoua; return on investment near 11 years; optimal capacity around 2033.
Publication date unrecorded. Inherited source-text record. The original publication has not been independently reopened for this web edition.
R12 · Grade C · inherited record
Inherited evidence R12
CICAM capacity utilisation, July 2023 report: Garoua 33.7 percent, CICAM 1 48.9 percent, CICAM 2 10.83 percent; underutilisation cost about CFAF 2 billion in 2020.
Publication date unrecorded. Inherited source-text record. The original publication has not been independently reopened for this web edition.
R14 · Grade C · inherited record
Inherited evidence R14
Cameroon minimum wage (SMIG) XAF 41,875 a month in 2023, raised to XAF 43,969 a month from 23 February 2024, about US$76, a rise of 5 percent.
Publication date unrecorded. Inherited source-text record. The original publication has not been independently reopened for this web edition.
R15 · Grade C · inherited record
Inherited evidence R15
Average salary across sectors in Cameroon about US$359 a month.
Publication date unrecorded. Inherited source-text record. The original publication has not been independently reopened for this web edition.
R16 · Grade C · inherited record
Inherited evidence R16
Informal share of employment about 90 percent; standard 40-hour week, 48-hour maximum, overtime at 1.2 times.
Publication date unrecorded. Inherited source-text record. The original publication has not been independently reopened for this web edition.
R17 · Grade C · inherited record
Inherited evidence R17
Cambodia garment-sector minimum wage US$204 a month for 2024 (labour-cost benchmark).
Publication date unrecorded. Inherited source-text record. The original publication has not been independently reopened for this web edition.
c12-S01 · Grade A
ISO 22400-2:2014: Automation systems and integration: Key performance indicators for manufacturing operations management, Part 2
The KPIs are presented by means of their formula and corresponding elements, their time behaviour, their unit/dimension and other characteristics.
2014. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S02 · Grade A
The Costs and Benefits of Advanced Maintenance in Manufacturing
Total productive maintenance (TPM) is a program that aims for zero breakdowns and zero defects and focuses on eliminating six losses: equipment breakdown, setup and adjustment slowdowns, idling and short-term stoppages, reduced capacity, quality-related losses, and startup/restart losses.
2018. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S04 · Grade B
Overall Equipment Effectiveness: Systematic Literature Review and Overview of Different Approaches
Availability measures downtime losses due to breakdowns or setup/adjustments; performance measures speed losses due to minor stoppages and reduced speed; and quality measures defect losses due to process defects or reduced yield [9].
2020-09-17. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S06 · Grade B
Equipment Effectiveness: OEE Revisited
OEE does include equipment-independent conditions, such as lack of input items.
2005-02-28. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S09 · Grade B
Achieving Sustainable Overall Equipment Effectiveness (OEE) in Apparel Industry With Lean and Digital Integration
Company X improved its OEE from 42.91% to 52.27% using PMDs and digital line balancing.
2025-07-26. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S12 · Grade A
Implementation of the Factory Improvement Toolset in the Asian garment sector: Final report
Sewing-room line achievements improved by 9.49 per cent and the work in progress and defect per hundred units of garments both reduced by 22 per cent.
2023. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S13 · Grade B
Creating Better Jobs for Women and Boosting Productivity in Bangladesh's Garment Factories: An assessment of the Gender Equality and Returns Program
The SMV for the garment is the sum of the SMVs for each of the steps required to produce the garment.
2025. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S14 · Grade C
How to Calculate OEE in the Garment Manufacturing Industry?
The sewing floor is labor intensive and overall production performance depends on the employees' performance instead of machine and equipment performance.
2024-11-14. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S15 · Grade B
Improvement of garment assembly line efficiency using line balancing technique
The cycle time is an amount of time for which a job remains in a workstation.
2020-04-03. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S16 · Grade B
Carbon Emission Evaluation Based on Multi-Objective Balance of Sewing Assembly Line in Apparel Industry
Equation (8) guarantees that the operating time of each process in any workstation should not exceed the assembly line pitch time.
2019-07-19. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S17 · Grade B
Applying Meta-Heuristics Algorithm to Solve Assembly Line Balancing Problem with Labor Skill Level in Garment Industry
The workers' performances for each task are rated from 0 (no skill at all) to 1.5 (fully skilled) according to the workers' skill table provided by Chan et al. [2].
2021-04-26. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S18 · Grade B
Evaluation of Manual Skill Degradation Due to Automation in Apparel Manufacturing
The average capacity percent of the MMG increased from 60.6% to 79.4%, increasing learning by almost twenty percent in six weeks.
2021-11-23. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S19 · Grade B
Remote Sensing of Sewing Work Levels Using a Power Monitoring System
The LD and LS are the first to be considered when designing garment production lines and determining staffing requirements.
2020-04-29. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S20 · Grade B
Knowledge Graph-Embedded Time-Serial-Data-Driven Bottleneck Analysis of Textile and Apparel Production Processes
Bottleneck workstations BNk are those with the highest long-term utilization or those whose work-in-process inventory in the upstream buffer is the largest of all buffers in the system.
2023-11-02. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S21 · Grade B
Apparel manufacturing systems
Single-piece flow means there is no WIP between any two operators in the sewing line.
2021. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S22 · Grade B
LAI Lean Academy Glossary
Little’s law strictly applies to long term averages of stable systems, i.e. ones which are not starting, stopping or surging.
2012. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S23 · Grade B
Class 3: Capacity Lecture
The relationship between waiting time and capacity utilization is strongly non-linear!
2004. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S25 · Grade B
Single Minute Exchange of Die
SMED refers to the target of reducing changeover times to a single digit, or less than 10 minutes.
2020-07-02. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S26 · Grade B
Standardized Work
The benefits of standardized work include documentation of the current process for all shifts, reductions in variability, easier training of new operators, reductions in injuries and strain, and a baseline for improvement activities.
2020-07-02. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S29 · Grade B
5 Whys - What is it?
5 Whys is the practice of asking why repeatedly whenever a problem is encountered in order to get beyond the obvious symptoms to discover the root cause.
2020-07-02. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S30 · Grade B
What is the Theory of Constraints, and How Does it Compare to Lean Thinking?
TOC advocates beginning with the constraint that most limits Throughput.
2006-09-08. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S33 · Grade A
Cameroon Labour Code, Law No. 92/007 of 14 August 1992
Statutory hours of work in all public and private non-agricultural establishments may not exceed forty hours per week.
1992-08-14. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S34 · Grade A
Decision 00000427 fixing electricity sale tariffs for medium-voltage customers
Les tarifs de vente hors taxe d'électricité des clients MT et les seuils minima de négociation sont composés de deux termes qui s'ajoutent :
2022-12-12. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S35 · Grade A
Creating Markets in Cameroon: Unleashing private sector growth
Access to electricity: energy supply is limited and unreliable.
2022. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S36 · Grade A
Power Constraints and Firm-Level Total Factor Productivity in Developing Countries
It shows that power outages negatively and significantly affect firm-level revenue-based total factor productivity, with a 9 percent lower unconditional average productivity for exposed firms compared to nonexposed firms.
2023. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S37 · Grade A
Advancing productivity, quality improvement and decent work in Ethiopia's garment industry: results so far
As a result, Edget Garment improved its line balance efficiency from 24 per cent to 75 per cent and increased its daily line production from 50 to 120 pieces.
2022-06-01. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S38 · Grade B
Workplace ergonomics: a comparative analysis of sitting and standing workstations in Ethiopian garment manufacturing industries
Sewing operator safety is vital in Ethiopia's clothing industry, but poor ergonomics cause long-term health risks.
2025-08-07. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S39 · Grade B
Labour turnover and workers' well-being in the Ethiopian manufacturing industry
Turnover in this study is lower than previous reports from the manufacturing industry in Ethiopia; almost one-third left before the first six months and half left within the first year.
2021. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S40 · Grade B
Better Work Ethiopia Annual Report 2023: Data from 2022
Factories also reported improved productivity, quality, and workplace organization, and a reduction of absenteeism in the lines led by the newly trained supervisors.
2023. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S41 · Grade B
Excessive Overtime, Workers and Productivity: Evidence and Implications for Better Work
However, in reality it has been proved that the extension of working hours does not in general yield proportionate increases in total output, and may even lead to an absolute reduction in total output in the long run (White, 1987).
2011. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S42 · Grade A
Purchasing practices and low wages in global supply chains: Empirical cases from the garment industry
Some of the companies are planning their orders, lead times and production peaks in advance with their suppliers.
2017. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S43 · Grade A
Efficiency Solutions for Industrial Heat: Lotus Garments Suez Canal, Egypt
It's critical for a plant to optimize its energy management system through efficiency measures before investing in renewable applications.
2020. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S44 · Grade A
Practical Guide for Implementing an Energy Management System
In the case of the large base load the level of production activity has a large effect on this indicator, i.e. if production volumes increase the ratio decreases and appears to show an improvement in energy performance when none has occurred.
2015. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S1201 · Grade B
Improving the garment industry through supervisors
Tufts studies determined that, when female supervisors take this training, productivity increases 22%.
2016-09-26. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c12-S1202 · Grade A
Enterprise Surveys What Businesses Experience: Cameroon 2024 Country Profile
Inadequate electricity provision supply can increase costs, disrupt production, and reduce profitability. Number of electrical outages in a typical month 10.4 10.6 9.4 11.8 6.9 5.3 Percent of firms experiencing electrical outages 93.3 95.7 90.6 77.9 69.7 55.0
2025-04-02. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
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S39 United Nations University World Institute for Development Economics Research. 2021.
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S41 Better Work, International Labour Organization and International Finance Corporation. 2011.
S02 National Institute of Standards and Technology. 2018.
S30 Lean Enterprise Institute. 2006-09-08.
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Keep the thread · chapter 12 of 14
Move the shuttle along the rack to preview any chapter: its sections, exhibits and reading time. Draft web edition. This research is not investment, legal or tax advice; illustrative models are not measured factory results.
The paper's rack · 14 boltsBolt length: reading time
01Part I: Measure the factory that actually exists
A garment factory creates value when the whole line converts available time and skill into accepted output. Installed machines and busy stations are evidence of resources, not proof of delivery.
02Part I: Measure the factory that actually exists
A single OEE score can start a conversation, but only its components and loss codes can tell a supervisor what to fix.
03Part I: Measure the factory that actually exists
A factory cannot interpret downtime until it has separated legal hours, planned production, external interruptions and losses inside the line.
04Part I: Measure the factory that actually exists
SMV translates garment work content into earned minutes, but it must sit beside OEE and quality rather than replace them.
05Part II: Balance work to the constraint
Balancing begins with operation precedence and required output, then tests how work can be shared without violating machine, skill or quality constraints.
06Part II: Balance work to the constraint
A workstation assignment is feasible only when the operator can perform the method safely and repeatedly at the assumed cycle and quality.
07Part II: Balance work to the constraint
A balance that ignores machine availability, skill or precedence can look efficient on screen and fail on the floor.
08Part II: Balance work to the constraint
A balance calculated for one style and crew decays as absence, learning, defects and order mix change the work.
09Part III: Design flow instead of local busyness
Balanced work needs controlled release. A line shortens delivery time when it admits work that downstream operations can use, makes queues visible and protects good output at its constraint.
10Part III: Design flow instead of local busyness
Small batches become practical when style changes are short, methods are standard and the layout lets qualified operators share work around the constraint.
11Part III: Design flow instead of local busyness
Defects consume capacity twice, first through lost good output and then through rework, queues and repeated interruption.
12Part IV: Turn measurement into sustained performance
A technically balanced line still fails when learned operators are absent, hours are unsustainable or electricity interrupts production.
13Part IV: Turn measurement into sustained performance
The financial benefit is not a higher dashboard score; it is more good garments at acceptable labour, energy, capital and working-capital cost.
14Part IV: Turn measurement into sustained performance
Release the next commitment only when a measured trial shows that good throughput, safe work and controlled flow survive ordinary operating conditions.