Short answer: In April 2025, HHS issued layoff notices to roughly 90% of NIOSH’s staff. After nine months of legal challenges and public pressure, HHS revoked all the notices on January 13, 2026, reinstating the workforce. For industrial hygienists, the agency is back — but the episode was a sharp reminder of how much of daily IH practice quietly depends on it.
What actually happened to NIOSH?
A near-total staffing cut, then a full reversal, over about nine months:
- April 2025: HHS sent reduction-in-force notices to roughly 900–1,000 NIOSH employees — about 90% of the agency.
- Through 2025: some staff were brought back amid lawsuits and congressional pressure, but hundreds sat on paid administrative leave for months.
- January 13, 2026: HHS reversed course entirely and revoked all remaining layoff notices.
- Funding: the House passed appropriations including about $366.8 million for NIOSH — an increase over the prior year.
Why does NIOSH matter to working industrial hygienists?
Because you likely touch its work every week without thinking about it. NIOSH:
- Approves respirators — the N95s and other equipment your programs depend on
- Publishes sampling and analytical methods (the NIOSH Manual of Analytical Methods) that labs run every day
- Sets Recommended Exposure Limits (RELs) and health-based guidance
- Runs research, Health Hazard Evaluations, and programs for miners and first responders
When the agency stalled, respirator approvals backed up, PPE-related work paused, and even counterfeit-respirator detection slowed. That’s not abstract — it’s the plumbing of the profession.
Is NIOSH fully back to normal in 2026?
Not quite. The people are reinstated, but the disruption left marks:
- Some experienced staff took other jobs during the nine-month limbo and didn’t return
- Backlogs built up — respirator applications, research projects, program work
- Rebuilding institutional momentum takes time
Expect a functioning agency that’s still working through a backlog for a while.
What should consultancies take from this?
Two practical lessons worth internalizing:
- Don’t treat federal timelines as guaranteed. Build slack into any project that depends on NIOSH approvals, methods, or guidance.
- The data you control is the data you can count on. When public infrastructure wobbles, the value of your own complete, retrievable records goes up.
The bigger headline, though, is simply this: NIOSH is back, and the profession is better for it.
Frequently asked questions
No. Layoffs targeted about 90% of staff in 2025, but the agency was never formally dissolved, and all layoff notices were revoked in January 2026.
No. NIOSH publishes Recommended Exposure Limits as guidance; OSHA sets the legally enforceable Permissible Exposure Limits.
Yes. Existing approvals remain valid, and the approval program is operating again after the 2025 delays.
When public infrastructure wobbles, own your records.
See how myIH keeps your field data complete and retrievable.
Book a demo with Sam