INdiana OSHA (IOSHA) — Indiana's OSHA-approved State Plan administered by the Indiana Department of Labor, Indiana Occupational Safety and Health Administration (IOSHA) — enforces hearing conservation requirements under Indiana Code Title 22, Article 8. Like all State Plan states, Indiana must maintain occupational safety standards at least as effective as federal OSHA. For hearing conservation, INdiana OSHA (IOSHA) adopts 29 CFR 1910.95 by reference, meaning the substantive requirements are identical to federal OSHA. This guide covers what Indiana employers need to know about operating a compliant hearing conservation program under INdiana OSHA (IOSHA)'s enforcement framework.
Soundtrace delivers audiometric testing and noise monitoring for employers across all 50 states including Indiana — ANSI S3.1-compliant and supervised by a licensed audiologist.
INdiana OSHA (IOSHA) Overview
INdiana OSHA (IOSHA) is an OSHA-approved State Plan that allows Indiana 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. INdiana OSHA (IOSHA) is administered by the Indiana Department of Labor, Indiana Occupational Safety and Health Administration (IOSHA) under Indiana Code Title 22, Article 8.
Indiana maintains a free on-site consultation program (Safety and Health Consultation Program) separate from enforcement. Employers requesting consultation are protected from citations based on hazards identified during the visit, provided they correct the hazards within agreed timelines.
Hearing Conservation Requirements in Indiana
IOSHA adopts federal OSHA standards including 29 CFR 1910.95 by reference with no additional hearing conservation requirements. Indiana has a significant manufacturing presence including steel, automotive, and pharmaceutical operations. IOSHA covers private sector employers; federal OSHA covers federal government contractors in Indiana.
The substantive hearing conservation requirements under INdiana OSHA (IOSHA) 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
INdiana OSHA (IOSHA) 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 Indiana.
| Employer Type | Governing Agency | Hearing Conservation Standard |
|---|---|---|
| Private sector employers in Indiana | INdiana OSHA (IOSHA) | 29 CFR 1910.95 |
| State and local government employers | INdiana OSHA (IOSHA) | 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
IOSHA penalty structure mirrors federal OSHA. Serious: up to $15,625. Willful/repeated: up to $156,259.
Penalty amounts are adjusted annually for inflation. INdiana OSHA (IOSHA) enforcement priorities may differ from federal OSHA Area Office priorities — Indiana's dominant industries often drive local enforcement focus. Employers subject to INdiana OSHA (IOSHA) 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 Indiana
The following industries in Indiana have significant occupational noise exposure profiles relevant to hearing conservation compliance: steel manufacturing, automotive, pharmaceutical, food processing, metal fabrication. 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 Indiana
The six required elements of an OSHA 1910.95 hearing conservation program apply identically in Indiana: noise monitoring, audiometric testing, hearing protection devices, annual training, recordkeeping, and access to information. There are no Indiana-specific additions to these requirements under INdiana OSHA (IOSHA).
The most common compliance gaps found during INdiana OSHA (IOSHA) 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 Indiana employers
Soundtrace delivers OSHA-compliant in-house audiometric testing for employers in Indiana 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
INdiana OSHA (IOSHA) is Indiana'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. INdiana OSHA (IOSHA) 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 INdiana OSHA (IOSHA) (rather than a federal OSHA Area Office) conducts inspections and issues citations for private sector employers in Indiana.
IOSHA penalty structure mirrors federal OSHA. Serious: up to $15,625. Willful/repeated: up to $156,259.
Underground and surface mining operations in Indiana fall under MSHA (30 CFR Part 62), not INdiana OSHA (IOSHA) or federal OSHA. Surface facilities at mining operations that are not engaged in mining activities may fall under INdiana OSHA (IOSHA)/"OSHA" jurisdiction. Employers in the mining sector should confirm jurisdiction for each worksite.