MNOSHA — Minnesota's OSHA-approved State Plan administered by the Minnesota Department of Labor and Industry, Occupational Safety and Health Division — enforces hearing conservation requirements under Minnesota Statutes Chapter 182. Like all State Plan states, Minnesota must maintain occupational safety standards at least as effective as federal OSHA. For hearing conservation, MNOSHA adopts 29 CFR 1910.95 by reference, meaning the substantive requirements are identical to federal OSHA. This guide covers what Minnesota employers need to know about operating a compliant hearing conservation program under MNOSHA's enforcement framework.
Soundtrace delivers audiometric testing and noise monitoring for employers across all 50 states including Minnesota — ANSI S3.1-compliant and supervised by a licensed audiologist.
MNOSHA Overview
MNOSHA is an OSHA-approved State Plan that allows Minnesota to operate its own occupational safety and health program in place of federal OSHA enforcement. State Plans must be at least as effective as federal OSHA. MNOSHA is administered by the Minnesota Department of Labor and Industry, Occupational Safety and Health Division under Minnesota Statutes Chapter 182.
Minnesota has a robust consultation program through MNOSHA that allows employers to request free safety consultations without triggering enforcement action. This is a useful resource for employers setting up HCP programs for the first time.
Hearing Conservation Requirements in Minnesota
MNOSHA adopts federal OSHA standards by reference with some state-specific additions. For hearing conservation, MNOSHA follows 29 CFR 1910.95 requirements. Minnesota has additional requirements for written safety programs in certain industries and stronger employee rights provisions. MNOSHA covers private sector and state and local government employees.
The substantive hearing conservation requirements under MNOSHA are identical to federal 1910.95: the 85 dBA action level triggers the full six-element program, the PEL is 90 dBA, baseline audiograms must be established within 6 months of enrollment, annual audiograms are required within 12 months of the previous test, and STS detection triggers a specific chain of employer actions. See: audiometric testing for employers: complete OSHA guide.
Jurisdiction and Coverage
MNOSHA enforces 29 CFR 1910.95 for both private sector employers and state/local government employees. Federal OSHA retains jurisdiction over federal government employees and contractors working in Minnesota.
| Employer Type | Governing Agency | Hearing Conservation Standard |
|---|---|---|
| Private sector employers in Minnesota | MNOSHA | 29 CFR 1910.95 |
| State and local government employers | MNOSHA | 29 CFR 1910.95 (adopted by reference) |
| Federal government employees | Federal OSHA | 29 CFR 1910.95 |
| Mining operations (underground/surface) | MSHA | 30 CFR Part 62 |
Enforcement and Penalties
MNOSHA penalties are at least as effective as federal. Serious: up to $15,625. Willful/repeated: up to $156,259.
Penalty amounts are adjusted annually for inflation. MNOSHA enforcement priorities may differ from federal OSHA Area Office priorities — Minnesota's dominant industries often drive local enforcement focus. Employers subject to MNOSHA enforcement are not subject to concurrent federal OSHA jurisdiction for the same violations.
For a complete overview of OSHA hearing conservation citation patterns and penalty structures, see: OSHA hearing conservation violations and penalties.
Key Noise-Exposed Industries in Minnesota
The following industries in Minnesota have significant occupational noise exposure profiles relevant to hearing conservation compliance: food processing, paper manufacturing, metal fabrication, printing, construction. Employers in these sectors should prioritize noise monitoring by job classification to confirm which workers meet the 85 dBA action level threshold.
Building a Compliant HCP in Minnesota
The six required elements of an OSHA 1910.95 hearing conservation program apply identically in Minnesota: noise monitoring, audiometric testing, hearing protection devices, annual training, recordkeeping, and access to information. There are no Minnesota-specific additions to these requirements under MNOSHA.
The most common compliance gaps found during MNOSHA inspections mirror federal OSHA patterns nationwide: late or missing baseline audiograms, annual audiogram schedule failures, and inadequate HPD variety. See: OSHA HCP inspection guide.
Compliant audiometric testing for Minnesota employers
Soundtrace delivers OSHA-compliant in-house audiometric testing for employers in Minnesota and across all 50 states — supervised by a licensed audiologist, ANSI S3.1-compliant, with 30-year cloud record retention.
Get a Free Quote Book a demo →Frequently Asked Questions
MNOSHA is Minnesota's OSHA-approved State Plan. It adopts federal 29 CFR 1910.95 by reference, meaning the substantive hearing conservation requirements are identical to federal OSHA. MNOSHA enforces 1910.95 for both private sector employers and state/local government employees.
Yes. The hearing conservation requirements — the 85 dBA action level, six required program elements, baseline and annual audiograms, STS detection and employer response requirements — are identical to federal 1910.95. The only difference is that MNOSHA (rather than a federal OSHA Area Office) conducts inspections and issues citations for private sector employers in Minnesota.
MNOSHA penalties are at least as effective as federal. Serious: up to $15,625. Willful/repeated: up to $156,259.
Underground and surface mining operations in Minnesota fall under MSHA (30 CFR Part 62), not MNOSHA or federal OSHA. Surface facilities at mining operations that are not engaged in mining activities may fall under MNOSHA/"OSHA" jurisdiction. Employers in the mining sector should confirm jurisdiction for each worksite.