Construction (29 CFR 1926)

Asbestos (Construction)

Verified vs OSHA sources · 2026-10-28

29 CFR 1926.1101

29 CFR 1926.1101 governs asbestos in construction: demolition, removal, renovation, repair, installation and the cleanup that follows. It caps exposure at 0.1 fiber per cubic centimeter as an 8-hour TWA (1926.1101(c)(1)) and 1.0 f/cc over 30 minutes (1926.1101(c)(2)), sorts the work into Classes I to IV (1926.1101(b)), and requires a regulated area for Class I, II and III work (1926.1101(e)(1)), an exposure assessment by a competent person (1926.1101(f)(2)(i)), training (1926.1101(k)(9)(ii)) and medical surveillance (1926.1101(m)(1)(i)(A)).

94 citations in construction (NAICS 23, federal, FY2025)

29 CFR 1926.1101 at a glance

PEL: 0.1 fiber/cc as an 8-hour TWA (29 CFR 1926.1101(c)(1))
Excursion limit: 1.0 fiber/cc averaged over 30 minutes (1926.1101(c)(2))
Who it covers: Construction work that involves asbestos: demolition, removal, encapsulation, renovation, repair, installation, spill cleanup and on-site handling of asbestos waste (1926.1101(a))
Classes of work: Class I removes TSI and surfacing ACM/PACM; Class II removes other ACM; Class III is repair and maintenance that disturbs ACM; Class IV is custodial work and cleanup (1926.1101(b))
Max penalty (2026): $16,550 per serious violation; $165,514 per willful
The #1 confusion: The class decides the controls and the training, and Class I, II and III work needs a regulated area even when no air sample has been taken (1926.1101(e)(1))

What 29 CFR 1926.1101 requires (plain English)

29 CFR 1926.1101 applies to asbestos exposure in construction work: demolition or salvage of structures where asbestos is present, removal or encapsulation of asbestos-containing material, construction, alteration, repair, maintenance or renovation of structures that contain asbestos, installation of asbestos products, asbestos spill cleanup, and the transport, disposal, storage and housekeeping of asbestos on the construction site (1926.1101(a)). It does not apply to asbestos-containing asphalt roof coatings, cements and mastics.

The limits are the same as in general industry: 0.1 fiber per cubic centimeter as an 8-hour time-weighted average and 1.0 f/cc averaged over 30 minutes (1926.1101(c)). What is particular to construction is the classification of the work. Class I is the removal of thermal system insulation (TSI) and surfacing material that contains or is presumed to contain asbestos; Class II is the removal of other asbestos-containing material such as wallboard, floor tile, roofing, siding and mastics; Class III is repair and maintenance where that material is likely to be disturbed; Class IV is maintenance and custodial work that touches it without disturbing it, and cleanup after Class I, II and III work (1926.1101(b)).

Class I, II and III work is done inside a regulated area (1926.1101(e)(1)). A competent person assesses exposure immediately before or at the start of each operation (1926.1101(f)(2)(i)); daily monitoring is required on Class I and II work unless a negative exposure assessment covers the whole operation (1926.1101(f)(3)(i)). Wet methods, HEPA vacuums and prompt cleanup apply to every covered operation (1926.1101(g)(1)), and four practices are prohibited whatever the measured level (1926.1101(g)(3)). Training runs before or at initial assignment and at least annually (1926.1101(k)(9)(ii)), and medical surveillance covers workers on Class I, II and III work, or exposed at or above a PEL, for 30 or more days a year (1926.1101(m)(1)(i)(A)).

Key facts about 29 CFR 1926.1101

The construction asbestos PEL is 0.1 fiber/cc as an 8-hour TWA (1926.1101(c)(1)); the excursion limit is 1.0 f/cc over 30 minutes (1926.1101(c)(2)).
Thermal system insulation and surfacing material in buildings constructed no later than 1980 are presumed asbestos-containing material (PACM) until the presumption is rebutted under 1926.1101(k)(5) (definition in 1926.1101(b)).
All Class I, II and III asbestos work is conducted within regulated areas (1926.1101(e)(1)).
A competent person conducts the initial exposure assessment immediately before or at the start of the operation (1926.1101(f)(2)(i)).
Daily monitoring applies to each worker in a regulated area on Class I or II work, unless a negative exposure assessment covers the entire operation (1926.1101(f)(3)(i)).
Monitoring results go to each affected employee within 5 working days of receipt, individually in writing or by posting (1926.1101(f)(5)).
Prohibited regardless of measured levels: high-speed abrasive disc saws without point-of-cut ventilation or HEPA-exhausted enclosures, compressed air to remove asbestos without an enclosed capture system, dry sweeping or shoveling of ACM/PACM debris, and employee rotation (1926.1101(g)(3)).
Training for Class I work, and for Class II work that uses critical barriers or negative pressure enclosures, is equivalent to EPA's Model Accreditation Plan worker course (1926.1101(k)(9)(iii)); Class III training takes at least 16 hours (1926.1101(k)(9)(v)).
Exposure measurement records are kept at least 30 years (1926.1101(n)(2)(iii)), medical surveillance records for the duration of employment plus 30 years (1926.1101(n)(3)(iii)), and training records one year beyond the last date of employment (1926.1101(n)(4)).

Scope: who 29 CFR 1926.1101 applies to

Regulatory framework: Construction (29 CFR 1926)
Citation reference: 29 CFR 1926.1101
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 1926.1101

#	What the section requires or covers
1	Keep exposure at or below 0.1 fiber per cubic centimeter as an 8-hour TWA and 1.0 f/cc averaged over 30 minutes (1926.1101(c))
2	Conduct all Class I, II and III work inside a regulated area (1926.1101(e)(1))
3	Have a competent person assess exposure immediately before or at the start of the operation (1926.1101(f)(2)(i))
4	Never use high-speed abrasive disc saws without point-of-cut ventilation or HEPA-exhausted enclosures, compressed air without an enclosed capture system, dry sweeping, or employee rotation (1926.1101(g)(3))
5	Train every worker who performs Class I through IV work before or at initial assignment and at least annually (1926.1101(k)(9))
6	Provide medical surveillance to workers on Class I, II and III work, or exposed at or above a PEL, for 30 or more days a year (1926.1101(m)(1)(i)(A))

Summarized from the text of 29 CFR 1926.1101. Always read the full regulation for the binding language.

Common Asbestos (Construction) violations

Deficiencies OSHA cites under 29 CFR 1926.1101 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.

Asbestos-containing or presumed material not identified before work starts: the employer's duty in 1926.1101(k)(3), 191 items in the Department of Labor data from October 1, 2024 to October 21, 2026, and the building owner's in (k)(2), 90 items.
Workers not trained for the class of work before or at initial assignment and annually (1926.1101(k)(9)): 106 items.
No respirator, or no respiratory protection program, where the section requires one (1926.1101(h)(1) and (h)(2)): 103 items.
Exposure not monitored (1926.1101(f)(1)): 79 items; no initial exposure assessment by a competent person ((f)(2)): 43 items.
HEPA vacuums, wet methods or prompt cleanup in leak-tight containers not used (1926.1101(g)(1)): 58 items.
Class I, II or III work outside a regulated area (1926.1101(e)(1)): 52 items; regulated-area work not supervised by a competent person ((e)(6)): 32 items.
No protective clothing where the section requires it (1926.1101(i)(1)): 50 items; no exposure measurement records ((n)(2)): 45 items.

No air sample does not mean no regulated area: the class of the work decides

A common mistake is to wait for air monitoring before setting up controls. Under 1926.1101(e)(1), Class I, II and III work is done inside a regulated area in every case; only other covered operations need one when exposure exceeds, or may exceed, a PEL. The controls in 1926.1101(g)(1) (HEPA vacuums, wet methods, prompt cleanup in leak-tight containers) apply regardless of the measured level, and the practices in 1926.1101(g)(3) are prohibited regardless of the results of the exposure assessment. A second confusion is scope: 1926.1101 governs construction, while 1910.1001 governs general industry; the 0.1 f/cc PEL is the same, but the classes, the competent person and the negative exposure assessment belong to the construction standard.

What OSHA inspectors look for

A compliance officer first asks what the material is and who checked: the building owner and the employer must identify asbestos-containing and presumed asbestos-containing material before work starts (1926.1101(k)(2) and (k)(3)). Then the class of the work, the regulated area and its signs, the competent person's exposure assessment, daily monitoring on Class I and II jobs without a negative exposure assessment, wet methods and HEPA vacuums, and the training records. Dry sweeping, compressed air without capture and high-speed saws without HEPA exhaust are prohibited whatever the measured levels (1926.1101(g)(3)).

Example: how a violation is cited

A renovation crew strips old pipe lagging in an office building built in the 1970s without testing it. Thermal system insulation in a building constructed no later than 1980 is presumed asbestos-containing until shown otherwise, so its removal is Class I work. With no regulated area, no exposure assessment and the debris swept up dry, OSHA can cite 1926.1101(e)(1), (f)(2)(i) and (g)(3)(iii), each as its own item, with serious penalties of up to $16,550 per violation.

Illustrative example, not a specific OSHA case.

Asbestos (Construction) compliance checklist

Use this to evaluate your compliance with 29 CFR 1926.1101. Each item is a key requirement OSHA may verify during an inspection.

Before work starts, get the building owner's information on asbestos-containing and presumed asbestos-containing material, and identify it yourself where you will work (1926.1101(k)(2) and (k)(3)).
Classify the job (Class I, II, III or IV) and set up a regulated area with warning signs for Class I, II and III work (1926.1101(e)(1) and (k)(7)).
Have a competent person assess exposure immediately before or at the start of the operation, and monitor daily on Class I and II work unless a negative exposure assessment covers the entire operation (1926.1101(f)(2) and (f)(3)).
Use HEPA vacuums, wet methods and prompt cleanup in leak-tight containers on every covered operation, and never dry sweep, use compressed air without capture, cut with high-speed abrasive saws without HEPA exhaust or rotate workers to lower exposure (1926.1101(g)(1) and (g)(3)).
Train each worker for the class of work before or at initial assignment and at least annually (1926.1101(k)(9)).
Enroll workers who spend 30 or more days a year on Class I, II or III work, or above a PEL, in medical surveillance; keep exposure records at least 30 years and medical records for employment plus 30 years (1926.1101(m) and (n)).

2026 penalties for 29 CFR 1926.1101

Maximums set by 29 CFR 1903.15(d). 2026 maximums unchanged from 2025 (no CPI adjustment; OMB M-26-11), so not an increase; the serious and repeat policy minimums were revised with FOM chapter 6 (OSHA memo of May 21, 2026). 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	Death or serious physical harm could result, and the employer knew or could have known (29 U.S.C. 666(k)).
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)

Serious violations reach $16,550 and willful or repeat violations $165,514. From October 1, 2024 to October 21, 2026, the Department of Labor data record 1,402 items under 1926.1101 in 408 inspections; a missing regulated area, a missing exposure assessment and a prohibited practice are separate items that can be cited together.

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 Asbestos (Construction) compliance

Asbestos causes asbestosis, lung cancer and mesothelioma, diseases that show up decades after exposure. In construction the material is already in place in older buildings, and cutting, drilling, stripping or demolishing it releases fibers. The 0.1 f/cc limit is the legal maximum, and the standard requires controls in every covered operation whatever the measured level (1926.1101(g)(1)).

Free compliance tools for 29 CFR 1926.1101

Respiratory Protection Program Builder PPE Selector Job Hazard Analysis Builder

State plans and their penalty rules

States listed by the volume of their federal construction citations, not by this standard. Penalties and enforcement vary by state. State-Plan states may impose higher penalties and additional requirements beyond federal 29 CFR 1926.1101.

Alabama Arkansas Colorado Connecticut Delaware District of Columbia

View all 50 states + DC →

Frequently asked questions about 29 CFR 1926.1101

What are the four classes of asbestos work in construction?

Under 29 CFR 1926.1101(b), Class I is the removal of thermal system insulation and surfacing material that contains or is presumed to contain asbestos. Class II is the removal of other asbestos-containing material, such as wallboard, floor tile and sheeting, roofing and siding shingles, and construction mastics. Class III is repair and maintenance where that material is likely to be disturbed. Class IV is maintenance and custodial work that contacts it without disturbing it, and the cleanup of dust, waste and debris from Class I, II and III work.

Does every asbestos job in construction need a regulated area?

Class I, II and III work always does, under 1926.1101(e)(1). Other covered operations need one where airborne asbestos exceeds, or may reasonably exceed, a permissible exposure limit. The regulated area is demarcated to keep people out and posted with the warning signs required by 1926.1101(k)(7).

What is a negative exposure assessment under 1926.1101?

It is the employer's demonstration, for one specific job done by trained workers, that exposure will stay below the PELs. Under 1926.1101(f)(2)(iii) it rests on objective data showing the material or activity cannot release fibers above the limits, on monitoring of closely similar jobs within the past 12 months, or on initial monitoring of the current job. Without one, Class I and II work requires daily monitoring under 1926.1101(f)(3)(i).

How long are asbestos records kept in construction?

Exposure measurement records are kept at least 30 years (1926.1101(n)(2)(iii)); medical surveillance records for the duration of employment plus 30 years (1926.1101(n)(3)(iii)); training records for one year beyond the last date of employment (1926.1101(n)(4)).

Regulatory history of 29 CFR 1926.1101

OSHA's 1994 asbestos rulemaking (59 FR 40964) set the current 0.1 f/cc 8-hour TWA for both the construction (1926.1101) and general-industry (1910.1001) standards.

Related glossary terms

Key terms that appear in 29 CFR 1926.1101, each with a full plain-English explainer.

Asbestos Competent Person Permissible Exposure Limit (PEL)Medical Surveillance Respiratory Protection Program Engineering Controls

Related guides & articles

Asbestos Construction 1926.1101: PEL & Classes Workplace Chemical Exposure Limits: PEL vs TLV

Related OSHA standards

29 CFR 1910.1000

Air Contaminants / PELs

29 CFR 1910.1001

Asbestos (GI)

29 CFR 1910.1003

OSHA 13 Carcinogens

29 CFR 1910.1018

Inorganic Arsenic

Primary sources

OSHA figures on this page are imported from HazComFast's verified regulatory module (verified 2026-10-28 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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