Defense contractors and other federal contractors working at government facilities are private-sector employers subject to full OSHA jurisdiction — even when their worksite is a military installation or federal facility. The host agency's program covers government employees only. This guide clarifies which OSHA standard applies, who is responsible for contractor HCPs, how OSHA enforces compliance at federal worksites, and what a compliant contractor HCP must include.
Defense contractor employees are private-sector workers. OSHA 29 CFR 1910.95 applies in full. The contractor is responsible for providing a compliant HCP. The host installation's military or federal agency program cannot substitute for the contractor's own compliance obligation.
Which OSHA Standard Applies
The applicable OSHA noise standard depends on the type of work performed — not where the work is located. On a single military installation, different contractor activities may fall under different standards simultaneously.
| Type of Work | Applicable Standard | Action Level | PEL |
|---|---|---|---|
| General industry operations (maintenance, manufacturing, depot work) | 29 CFR 1910.95 | 85 dBA TWA | 90 dBA TWA |
| Construction activities (new construction, demolition, major renovation) | 29 CFR 1926.52 | 90 dBA TWA | 90 dBA TWA |
| Shipyard employment (ship repair at naval facilities) | 29 CFR 1915 Subpart B | 85 dBA TWA | 90 dBA TWA |
OSHA Enforcement at Federal Facilities
OSHA and DoD have a Memorandum of Understanding governing OSHA access to military installations for inspecting contractor worksites. OSHA inspectors may access installations subject to security requirements — coordination may be required, but inspections are not prevented. Installation safety offices that identify HCP deficiencies in contractor operations may refer the matter directly to OSHA.
The Contractor–Government Boundary
| Compliance Element | Contractor Responsibility | Government Responsibility |
|---|---|---|
| HCP documentation | Contractor must maintain its own written HCP | Government program covers government employees only |
| Noise monitoring | Contractor must assess exposures for its own employees | Installation IH surveys are for government employees |
| Audiometric testing | Contractor must provide testing at no cost | Government testing covers government employees only |
| Professional supervision | Contractor must have its own PS per 1910.95(g)(3) | Government audiologist covers government employees only |
| OSHA 300 Log | Contractor maintains its own 300 Log | Government 300 Log for civilian employees is separate |
| HPD program | Contractor must provide HPDs at no cost | Government HPD issuance covers government employees only |
| Training | Contractor must provide annual 1910.95(k) training | Installation training cannot satisfy contractor's obligation |
What a Contractor HCP Must Include
- Noise monitoring: Document exposures for all contractor employees; identify enrolled workers
- Audiometric testing: Baseline within 6 months; annual thereafter; at no cost
- STS determination and follow-up: Compare annual to baseline; notify within 21 days
- Professional supervision: Licensed audiologist or physician must oversee program per 1910.95(g)(3)
- Hearing protection: Provide at no cost; adequate for actual exposure levels
- Training: Annual per 1910.95(k) for all enrolled employees
- Recordkeeping: Audiometric records employment duration; monitoring 2 years; OSHA 300 Log
HCP Requirements in Contract Statements of Work
A compliant SOW should specify contractor responsibility for its own 1910.95-compliant HCP; baseline audiograms before work begins in noise-hazardous areas; independent record maintenance; records available to the government for audit; and professional supervisor arrangements satisfying 1910.95(g)(3). FAR Clause 52.223-3 establishes baseline safety compliance obligations.
Mixed Worksites: Contractor and Government Workers
| Worker Type | Governing Standard | Who Runs the HCP | OSHA 300 Log |
|---|---|---|---|
| Military service members | DoDI 6055.12 only (exempt from OSHA) | Installation HRO / military medical | Not applicable |
| DoD civilian employees | OSHA 1910.95 + DoDI 6055.12 | Installation HCP (civilian component) | Federal agency OSHA 300 Log |
| Defense contractor employees | OSHA 1910.95 (private sector) | Contractor’s own HCP | Contractor’s own OSHA 300 Log |
| Subcontractor employees | OSHA 1910.95 (private sector) | Subcontractor’s own HCP; prime may be responsible under multiemployer doctrine | Subcontractor’s own OSHA 300 Log |
Common Compliance Gaps
| Gap | Citation Risk |
|---|---|
| No baseline audiograms for employees in noise-hazardous areas | High — 1910.95(g)(2); each uncovered employee a potential separate violation |
| No professional supervisor arrangement | High — 1910.95(g)(3); undermines entire program validity |
| Missing annual audiograms for enrolled employees | High — 1910.95(g)(6) |
| No STS determination or follow-up documentation | High — 1910.95(g)(7)/(8); potential 300 Log violation |
| No hearing conservation training records | Moderate — 1910.95(k)(1) |
Frequently Asked Questions
General industry work: OSHA 29 CFR 1910.95. Construction: 29 CFR 1926.52. Shipyard work at naval facilities: 29 CFR 1915. The standard is determined by the type of work performed, not the location.
No. The installation’s program covers DoD military and civilian personnel only. The contractor retains its independent OSHA 1910.95 obligation regardless of whether contractor employees are physically present at installation testing.
Yes. OSHA has full citation and penalty authority over contractors at military installations under its MOU with DoD. Contractor sites are not shielded by location on a federal facility.
Build an Independent, OSHA-Compliant Contractor HCP
Soundtrace provides defense and federal contractors with automated in-house audiometric testing, audiologist review on every record, and complete 1910.95-compliant documentation — independent of the host installation’s program.
Request a Contractor HCP Assessment- Federal Government & DoD Hearing Conservation: The Complete Compliance Guide
- DoDI 6055.12: Complete Guide for DoD Civilian Safety Managers
- How 29 CFR 1960 Governs Federal Agency Hearing Conservation
- OSHA Hearing Conservation Program: The Complete Guide
- Workers’ Compensation for Occupational Hearing Loss: 50-State Guide