General Industry (29 CFR 1910)

Cotton Dust

Verified vs OSHA sources · 2026-10-05

29 CFR 1910.1043

29 CFR 1910.1043 protects textile workers from cotton dust, which causes byssinosis (brown lung): a disabling respiratory disease. For yarn manufacturing it caps exposure at 200 µg/m³ of lint-free respirable cotton dust as an 8-hour TWA (higher limits apply to slashing and weaving and to waste processing), requiring monitoring, engineering controls, respirators, and medical surveillance with pulmonary function testing.

29 CFR 1910.1043 at a glance

PEL (yarn manufacturing): 200 µg/m³ lint-free respirable cotton dust, 8-hr TWA (29 CFR 1910.1043(c)(1))
Disease: Byssinosis (brown lung): worst at the start of the work week
Other limits: Higher PELs apply to slashing and weaving and to waste processing
Surveillance: Pulmonary function testing and byssinosis questionnaire
Max penalty (2026): $16,550 per serious violation; $165,514 per willful
The #1 confusion: The PEL is process-specific: yarn manufacturing differs from weaving and waste

What 29 CFR 1910.1043 requires (plain English)

29 CFR 1910.1043 protects workers in the textile industry from cotton dust: the dust generated when cotton is processed from bale to yarn and fabric. Inhaling it causes byssinosis, or brown lung, a respiratory disease whose hallmark is chest tightness and breathlessness that is worst on the first day back at work ("Monday chest tightness") and that can become permanent.

The standard sets process-specific permissible exposure limits measured as lint-free respirable cotton dust over an 8-hour time-weighted average: 200 µg/m³ for yarn manufacturing (and cotton washing), with higher limits for slashing and weaving operations and for waste-house and other processing. Employers must monitor exposures, use engineering and work-practice controls (ventilation, enclosure, washed cotton), provide respirators where controls are insufficient, and conduct medical surveillance with pulmonary function testing.

1910.1043 is a Subpart Z substance-specific health standard. It was central to the Supreme Court's 1981 "Cotton Dust" decision (American Textile Manufacturers Institute v. Donovan), which upheld OSHA's authority to set health standards without a strict cost-benefit test: a landmark in occupational health law.

The regulatory text

“The employer shall assure that no employee who is exposed to cotton dust in yarn manufacturing and cotton washing operations is exposed to airborne concentrations of lint-free respirable cotton dust greater than 200 µg/m3 mean concentration, averaged over an eight-hour period, as measured be [sic] a vertical elutriator or an equivalent instrument.”

29 CFR 1910.1043(c)(1)(i)

Key facts about 29 CFR 1910.1043

The cotton dust PEL for yarn manufacturing is 200 µg/m³ as an 8-hour TWA (1910.1043(c)(1)).
Cotton dust causes byssinosis (brown lung), worst at the start of the work week.
PELs are process-specific: slashing and weaving and waste processing have higher limits.
Exposure is measured as lint-free respirable cotton dust by a vertical elutriator.
Engineering controls (ventilation, washed cotton, enclosure) are the primary means of compliance.
Medical surveillance includes pulmonary function testing and a byssinosis questionnaire.
The 1981 Supreme Court "Cotton Dust" case upheld OSHA's health-standard authority.

Scope: who 29 CFR 1910.1043 applies to

Regulatory framework: General Industry (29 CFR 1910)
Citation reference: 29 CFR 1910.1043
Enforcement status: In force and enforced
Jurisdiction: Federal OSHA (29 State-Plan jurisdictions may be stricter)

State-Plan states (e.g. California, Washington, Michigan) operate OSHA-approved programs that must be at least as effective as federal OSHA and frequently impose higher penalties or additional requirements. Confirm the rule as adopted in your state.

Key requirements of 29 CFR 1910.1043

#	Employer obligation
1	Limit yarn manufacturing exposure to 200 µg/m³
2	Limit textile slashing/weaving to 750 µg/m³
3	Monitor exposure every 6 months
4	Provide medical surveillance including pulmonary function tests
5	Use engineering controls as primary method

Summarized from the text of 29 CFR 1910.1043. Always read the full regulation for the binding language.

Common Cotton Dust violations

Deficiencies OSHA cites under 29 CFR 1910.1043 include the ones below, in no particular order. Distinct deficiencies can be cited as separate items, and each serious item carries up to $16,550 (2026). Broader per-instance stacking exists but is a discretionary, case-by-case OSHA enforcement policy, not an automatic multiplier.

No or inadequate exposure monitoring in textile operations (1910.1043(d)).
Exposures above the applicable process PEL without adequate controls (1910.1043(e)).
No medical surveillance with pulmonary function testing (1910.1043(h)).
Reliance on respirators instead of feasible engineering controls (1910.1043(e) and (f)).
No respirator program where controls are insufficient (1910.1043(f)).

The cotton-dust PEL is process-specific: one number does not fit the whole mill

A frequent error is applying a single cotton-dust limit across an entire textile mill. The standard sets different permissible exposure limits by process because dust levels and disease risk vary: 200 µg/m³ for yarn manufacturing (and cotton washing), a higher limit for slashing and weaving, and another for waste-house and other cotton processing. Comparing a weaving-room reading against the yarn-manufacturing PEL, or vice versa, misjudges compliance. Each operation must be evaluated against its own applicable limit, and exposure must be measured as lint-free respirable cotton dust with a vertical elutriator or equivalent.

What OSHA inspectors look for

A compliance officer checks exposure monitoring in yarn manufacturing and other textile operations, verifies engineering controls (ventilation, washed cotton, enclosure), and confirms medical surveillance with pulmonary function testing and byssinosis questionnaires. Opening, carding, and spinning without dust control are common findings.

Example: how a violation is cited

Carding-room workers in a yarn mill develop chest tightness that worsens on Mondays, classic byssinosis, while dust controls are inadequate and no pulmonary testing is done. OSHA cites 1910.1043 for exposure above the 200 µg/m³ PEL and missing surveillance, with penalties from $16,550.

Illustrative example, not a specific OSHA case.

Cotton Dust compliance checklist

Use this to evaluate your compliance with 29 CFR 1910.1043. Each item is a key requirement OSHA may verify during an inspection.

Identify each cotton-processing operation and apply the correct process-specific PEL.
Monitor exposure as lint-free respirable cotton dust with a vertical elutriator or equivalent.
Reduce exposure (yarn-manufacturing PEL 200 µg/m³) with ventilation, washed cotton, and enclosure.
Provide medical surveillance with pulmonary function testing and byssinosis questionnaires.
Provide respirators where feasible controls do not achieve the PEL.
Train workers on byssinosis and on the dust-control program.

2026 penalties for 29 CFR 1910.1043

Maximums set by 29 CFR 1903.15(d). 2026 amounts unchanged from 2025 (no CPI adjustment; OMB M-26-11). Not an increase. The 2025 OSHA penalty levels remain in effect for 2026; OSHA made no inflation adjustment for 2026. 29 CFR 1903.15 identifies January 15, 2025 as the effective reference for these amounts, while OSHA's public penalties page currently references penalties assessed after Jan. 15, 2026.

Violation type	Minimum	Maximum	When it applies
Serious	$1,085	$16,550	Substantial probability of death or serious physical harm.
Other-Than-Serious	$0	$16,550	Relates to safety/health but unlikely to cause death or serious harm.
Willful	$11,823	$165,514	Intentional, knowing, or voluntary disregard of the requirement.
Repeated	$4,256	$165,514	A substantially similar violation cited within the last 5 years.
Failure to Abate	None	$16,550/day	up to $16,550 per day; total capped at 30x the daily amount (FOM Ch.6)

Cotton-dust citations follow health inspections of textile mills. Serious violations reach $16,550 and willful or repeat violations $165,514; inadequate dust control and no pulmonary surveillance are the usual findings.

Maximums and the willful minimum are set by 29 CFR 1903.15(d); the serious and repeated minimums are OSHA policy floors from its annual penalty adjustment memo. OSHA applies gravity-based and size, good-faith and history reductions (FOM CPL 02-00-164 Ch.6). Estimates only, not legal advice.

The business case for Cotton Dust compliance

Cotton dust causes byssinosis, or brown lung: a progressive, disabling respiratory disease historically common in textile mills, marked by chest tightness that is worst at the start of the work week. Keeping exposure under the 200 µg/m³ yarn-manufacturing PEL with ventilation and washed cotton, plus pulmonary surveillance, is what has driven byssinosis down in the industry.

Free compliance tools for 29 CFR 1910.1043

Respiratory Protection Program Builder PPE Selector Job Hazard Analysis Builder

Cotton Dust penalties by state

Penalties and enforcement vary by state. State-Plan states may impose higher penalties and additional requirements beyond federal 29 CFR 1910.1043.

Alabama Arkansas Colorado Connecticut Delaware District of Columbia

View all 50 states + DC →

Frequently asked questions about 29 CFR 1910.1043

What is the OSHA cotton dust PEL?

The permissible exposure limit is process-specific. Under 1910.1043(c), yarn manufacturing (and cotton washing) has a PEL of 200 µg/m³ of lint-free respirable cotton dust as an 8-hour time-weighted average, with higher limits for slashing and weaving operations and for waste-house and other processing. Exposure is measured with a vertical elutriator or equivalent instrument.

What is byssinosis?

Byssinosis, or brown lung, is a respiratory disease caused by inhaling cotton (and other vegetable) dust. Its hallmark is chest tightness and breathlessness that is worst on the first day back at work after time off, 'Monday chest tightness', and with continued exposure it can progress to permanent, disabling lung impairment. Preventing byssinosis is the purpose of the cotton dust standard.

Why does the cotton dust PEL differ by operation?

Because dust levels and disease risk vary across the process. Yarn manufacturing generates different exposures than slashing and weaving or waste processing, so 1910.1043 sets a separate PEL for each. Each operation must be compared against its own limit; the 200 µg/m³ yarn-manufacturing PEL does not apply to weaving, which has a higher limit.

What was the Supreme Court "Cotton Dust" case?

In American Textile Manufacturers Institute v. Donovan (1981), the Supreme Court upheld OSHA's cotton dust standard and ruled that OSHA is not required to justify health standards through strict cost-benefit analysis, only that they be feasible. It is a landmark decision that confirmed OSHA's authority to protect workers from health hazards like cotton dust.

Regulatory history of 29 CFR 1910.1043

OSHA issued the cotton dust standard in 1978 (43 FR 27350) to prevent byssinosis, then endemic in textile mills. In 1981 the Supreme Court, in American Textile Manufacturers Institute v. Donovan, upheld it and confirmed OSHA need not justify health standards by strict cost-benefit analysis: a decision that shaped all later OSHA health rulemaking.

Related glossary terms

Key terms that appear in 29 CFR 1910.1043, each with a full plain-English explainer.

Permissible Exposure Limit (PEL)Medical Surveillance Engineering Controls Respiratory Protection Program Hierarchy of Controls Personal Protective Equipment (PPE)

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Primary sources

OSHA figures on this page are imported from HazComFast's verified regulatory module (verified 2026-10-05 against eCFR, OSHA.gov, and the Federal Register).

This page is an educational summary, not legal advice. OSHA standards and penalty amounts change; confirm requirements against the current regulation and your applicable State-Plan before acting.

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