1910.1450(d): Employee exposure determination
Key takeaways
- 1910.1450(d) is part of OSHA's general industry standards (29 CFR Part 1910).
- OSHA cited it 8 times in the last 3 years, in 8 inspections, with $2,600 in current penalties.
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In this article
What this rule covers
29 CFR 1910.1450(d) ("Employee exposure determination") is one requirement inside 1910.1450 Occupational exposure to hazardous chemicals in laboratories, an OSHA general industry standard (Part 1910). It includes 4 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) Employee exposure determination — 8 citations
(1) Initial monitoring. The employer shall measure the employee's exposure to any substance regulated by a standard which requires monitoring if there is reason to believe that exposure levels for that substance routinely exceed the action level (or in the absence of an action level, the PEL). 7 citations
(2) Periodic monitoring. If the initial monitoring prescribed by paragraph (d)(1) of this section discloses employee exposure over the action level (or in the absence of an action level, the PEL), the employer shall immediately comply with the exposure monitoring provisions of the relevant standard.
(3) Termination of monitoring. Monitoring may be terminated in accordance with the relevant standard.
(4) Employee notification of monitoring results. The employer shall, within 15 working days after the receipt of any monitoring results, notify the employee of these results in writing either individually or by posting results in an appropriate location that is accessible to employees. 1 citations
Source: eCFR, text current as of 2026-10-15. Read all of 1910.1450.
Export the list: 8 inspections cited 1910.1450(d) in the last 3 years, with employer, location, penalty and date.
Purple Belt, $59/moWhere and how often it was cited
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OSHA interpretation letters
None exist. OSHA has not published a letter of interpretation for 1910.1450(d).
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About this page
Sources
- 29 CFR 1910.1450 (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 2026-11-06
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.