Is OSHA 10 Required in Connecticut?
Connecticut's OSHA-10 mandate is a public-works construction requirement enforced by the state Labor Commissioner, separate from the CONN-OSHA State Plan that covers only state and local government workers. This page keeps those two Connecticut facts apart, since confusing them is a common mistake.
Does Connecticut require OSHA 10 on public works projects?
Yes, Connecticut General Statutes Section 31-53b is a current, live public-works OSHA-10 mandate, enforced by the Connecticut Labor Commissioner rather than CONN-OSHA, confirmed by a direct read of the statute text itself this pass.
The statute reaches public works construction projects and is enforced separately from Connecticut's general workplace-safety apparatus. CONN-OSHA itself, by contrast, is confirmed to impose no Outreach card duty of its own under the separate CONN-OSHA-governing statute reviewed alongside Section 31-53b.
What is the refresher requirement for plumbers and electricians?
Connecticut's Section 31-53b imposes a 4-hour refresher training duty specifically for certain plumbers and electricians working on covered public-works projects, on top of the base OSHA-10 requirement that applies to other covered workers.
This refresher duty is narrower than the base mandate - it names specific trades rather than every worker on the site - so confirm whether your specific trade falls under the refresher duty or the base OSHA-10 requirement before assuming which applies to your role.
What happens if a worker on a Connecticut public-works site is not compliant?
Connecticut's statute carries a removal-from-worksite penalty for noncompliance, meaning a worker without the required OSHA-10 card (or the refresher training where it applies) can be removed from the covered public-works project.
This site's source research did not find a specific dollar-penalty figure attached to Connecticut's statute comparable to Missouri's $2,500-plus-$100/day schedule; the confirmed enforcement mechanism is worksite removal. That makes Connecticut's enforcement model closer in shape to Nevada's suspend-or-terminate approach than to Missouri's per-day dollar penalty, though the two are not identical: Nevada's removal duty falls on the employer under statute, while Connecticut's confirmed mechanism is removal from the specific public-works site rather than a broader employment action.
Does Connecticut maintain its own approved-provider list?
No, this site's source research found no Connecticut-specific commercial-provider roster; the applicable roster for online delivery is federal OSHA's own 8-provider list, the same national roster that applies in every non-mandate state.
Verify a provider against OSHA's own authorized-provider list before enrolling for Connecticut public-works compliance, exactly as in every other state covered by this site.
Does Connecticut operate its own state OSHA plan?
Yes, but only partially - CONN-OSHA is an OSHA-approved State Plan covering state and local government workers only, while private-sector Connecticut employers and workers remain under direct federal OSHA jurisdiction for general enforcement.
CONN-OSHA has adopted all federal OSHA general industry and construction standards by reference, but this state-and-local-government-only State Plan is a separate fact from the public-works OSHA-10 mandate under Section 31-53b, which is enforced by the Labor Commissioner and applies regardless of a worker's employer being public or private on a covered public-works contract.
Related pages
- OSHA 10 Requirements by State - the full hub, with the comparison table of every confirmed mandate jurisdiction
- OSHA 10 Requirements: Hours, Tracks, and Card Rules - the federal baseline rules that apply on top of Connecticut's statute
- OSHA 10 vs. OSHA 30 - full comparison of the worker and supervisor levels
- Is OSHA 10 Required in Missouri? - another public-works mandate, with a dollar-penalty schedule instead of worksite removal
- Approved Providers - the federal roster Connecticut defers to
Sources
| Fact | Value | Authority | URL | Verified |
|---|---|---|---|---|
| Public-works mandate | CGS Sec. 31-53b | CT Labor Commissioner | https://www.cga.ct.gov/current/pub/chap_557.htm | 2026-08-04 |
| Refresher duty | 4 hours, for certain plumbers and electricians | CT Labor Commissioner | https://www.cga.ct.gov/current/pub/chap_557.htm | 2026-08-04 |
| Refresher recurrence | Per-project trigger, not a fixed cycle: required when the worker's 10-hour card is 5+ years old at project start (contracts on/after July 1, 2012) | CT Labor Commissioner | https://www.cga.ct.gov/current/pub/chap_557.htm | 2026-08-04 |
| Enforcement mechanism | Removal from worksite for noncompliance | CT Labor Commissioner | https://www.cga.ct.gov/current/pub/chap_557.htm | 2026-08-04 |
| Provider roster used | Federal OSHA's own 8-provider list (no CT-specific roster) | U.S. Department of Labor, OSHA | https://www.osha.gov/training/outreach/training-providers | 2026-08-04 |
| CONN-OSHA State Plan scope | State and local government workers only | U.S. Department of Labor, OSHA | https://www.osha.gov/stateplans/ct | 2026-08-04 |
| CONN-OSHA plan certification | Certified August 21, 1986 (51 FR 29918) | U.S. Department of Labor, OSHA | https://www.osha.gov/stateplans/ct | 2026-08-04 |
Frequently asked questions
Does Section 31-53b apply to private construction in Connecticut?
No, this site's source research found the mandate applies to public works construction specifically; a private Connecticut construction job would follow employer or contract policy rather than a state statute, the same as in a non-mandate state.
Is the 4-hour refresher a one-time requirement or recurring?
It is not a fixed recurring cycle - CGS Sec. 31-53b(a) triggers the 4-hour refresher on a per-project basis: a covered plumber or electrician who completed the 10-hour course five or more years before starting work on a given public-works project must complete the refresher again for that project, confirmed by direct read of the statute text (cga.ct.gov, 2026-08-04). The refresher duty applies to contracts entered on or after July 1, 2012.
Does holding a Connecticut CONN-OSHA-adopted safety certification satisfy the public-works OSHA-10 mandate?
No, CONN-OSHA's adopted standards govern general workplace-safety compliance for state and local government workers; they are a separate fact from the public-works OSHA-10 training mandate under Section 31-53b, which is not a CONN-OSHA program.
What accepted alternatives to OSHA-10 exist in Connecticut, similar to Missouri's list?
This site's source research did not find a named alternative-training list comparable to Missouri's MSHA/PEC options; Connecticut's statute, as sourced, centers on the OSHA-10 course itself rather than naming substitute programs.
Who should a worker contact to confirm current Connecticut compliance status?
The Connecticut Department of Labor, Labor Commissioner's office, is the enforcing authority for Section 31-53b; this site is an independent aggregator and does not verify individual worker compliance.