1926.1101(d): Asbestos Duties on Multi-Employer Worksites
On multi-employer worksites, the employer doing asbestos work that needs a regulated area must tell other employers about the work, the regulated areas and how their employees are protected. The contractor who created or controls the asbestos source must fix the hazard, other employers must protect their own exposed workers, employers working next to regulated areas must check the enclosure or controls daily, and general contractors are deemed to supervise the asbestos work.
Key takeaways
- 1926.1101(d) is part of OSHA's construction standards (29 CFR Part 1926, Subpart Z).
- OSHA cited it 29 times in the last 3 years, in 29 inspections, with $99,908 in current penalties.
- Most citations: MI (7), IL (7), OR (4).
- Related part: 1926.1101(d)(5) (20 citations).
- Free 5-minute toolbox talk for your crew below.
In this article
What this rule covers
29 CFR 1926.1101(d) ("Multi-employer worksites") is one requirement inside 1926.1101 Asbestos, an OSHA construction standard (Part 1926, Subpart Z). It includes 5 sub-paragraphs. The official text below is copied word for word from the Electronic Code of Federal Regulations (eCFR). The numbers, injury cases and training on this page show how OSHA enforces it on real job sites.
Official text
(d) Multi-employer worksites. 29 citations
(1) On multi-employer worksites, an employer performing work requiring the establishment of a regulated area shall inform other employers on the site of the nature of the employer's work with asbestos and/or PACM, of the existence of and requirements pertaining to regulated areas, and the measures taken to ensure that employees of such other employers are not exposed to asbestos. 6 citations
(2) Asbestos hazards at a multi-employer work site shall be abated by the contractor who created or controls the source of asbestos contamination. For example, if there is a significant breach of an enclosure containing Class I work, the employer responsible for erecting the enclosure shall repair the breach immediately. 2 citations
(3) In addition, all employers of employees exposed to asbestos hazards shall comply with applicable protective provisions to protect their employees. For example, if employees working immediately adjacent to a Class I asbestos job are exposed to asbestos due to the inadequate containment of such job, their employer shall either remove the employees from the area until the enclosure breach is repaired; or perform an initial exposure assessment pursuant to (f) of this section.
(4) All employers of employees working adjacent to regulated areas established by another employer on a multi-employer work-site, shall take steps on a daily basis to ascertain the integrity of the enclosure and/or the effectiveness of the control method relied on by the primary asbestos contractor to assure that asbestos fibers do not migrate to such adjacent areas. 1 citations
(5) All general contractors on a construction project which includes work covered by this standard shall be deemed to exercise general supervisory authority over the work covered by this standard, even though the general contractor is not qualified to serve as the asbestos “competent person” as defined by paragraph (b) of this section. As supervisor of the entire project, the general contractor shall ascertain whether the asbestos contractor is in compliance with this standard, and shall require such contractor to come into compliance with this standard when necessary. Open (d)(5) 20 citations
Source: eCFR, text current as of 2026-10-15. Read all of 1926.1101.
Where and how often it was cited
| Year | Citations |
|---|---|
| 2023 | 1 |
| 2024 | 7 |
| 2025 | 11 |
| 2026 | 10 |
Top states: MI (7), IL (7), OR (4), VA (2), NY (2)
Largest penalties
| Employer | Location | Penalty for this rule |
|---|---|---|
| APLUS ENVIRONMENTAL, LLC | BOSTON, MA | $20,000 |
| REED ILLINOIS CORPORATION DBA REED CONSTRUCTION | WAUKEGAN, IL | $16,131 |
| STEVE GENERAL CONTRACTORS, INC. | ROCHESTER, NY | $10,000 |
| ALLIANCE ENVIRONMENTAL CONTROL, INC. | WAUKEGAN, IL | $6,452 |
| 317741833 - LIMINAL SHIFT OR LLC | PORTLAND, OR | $4,708 |
Free toolbox talk
A 5-minute crew talk on 1926.1101(d), plus alerts when this rule changes. Free.
OSHA interpretation letters
None exist. OSHA has not published a letter of interpretation for 1926.1101(d).
Related parts of this rule
- 1926.1101(d)(5) 20 citations
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Frequently asked questions
What must the asbestos contractor tell other employers?
The nature of its asbestos or PACM work, the regulated areas and their requirements, and the measures taken to keep other employers' employees from being exposed.
Who must fix an asbestos hazard on a shared site?
The contractor who created or controls the source of asbestos contamination.
What must employers next to a regulated area do daily?
Take steps to check the integrity of the enclosure or the effectiveness of the control method so fibers do not migrate to adjacent areas.
About this page
Sources
- 29 CFR 1926.1101 (eCFR), text current as of 2026-10-15
- U.S. Department of Labor enforcement data: OSHA inspections, citations and accident records, copied nightly; data as of 2026-10-20
3-year window. Federal OSHA only; state-plan rules are not counted. Plain-language text is a summary, not legal advice; the official text controls. Black Belt Safety is not part of OSHA or the Department of Labor.