OSHA conducts tens of thousands of workplace inspections every year. Some are planned. Most are not. A complaint filed Monday morning can put an inspector at your door by Wednesday. Knowing what puts a workplace on OSHA's radar is the first step toward making sure yours stays off it.
1. Employee Complaints
This is the single most common trigger for OSHA inspections. Any current or former employee — or their representative — can file a complaint with OSHA online, by phone, or by mail. OSHA takes all formal complaints seriously, and complaints alleging imminent danger or serious hazards get priority response.
Key facts about employee complaints:
- Employees have the right to file complaints anonymously
- OSHA does not require the employee's name to open an investigation
- It is illegal to retaliate against an employee for filing an OSHA complaint
- Complaints about imminent danger receive the fastest response — often same-day
2. Severe Injury or Fatality Reports
OSHA has mandatory reporting requirements for serious workplace incidents. When they receive one of these reports, an inspector is almost always dispatched — often the same day.
| Incident Type | Reporting Deadline |
|---|---|
| Worker fatality | Within 8 hours |
| In-patient hospitalization of 3+ workers | Within 8 hours |
| Amputation | Within 24 hours |
| Loss of an eye | Within 24 hours |
You report these incidents to OSHA by calling 1-800-321-OSHA or your nearest OSHA area office. Failure to report on time is itself a citable violation — up to $16,550 per incident.
3. Programmed (Planned) Inspections
OSHA conducts regular inspections of high-hazard industries even when no complaint has been filed. Industries with high injury and illness rates are placed on targeted inspection lists. If your industry has historically high rates, expect periodic inspections regardless of your current safety record.
Industries most commonly targeted for programmed inspections include:
- Construction — especially high-rise and excavation work
- Manufacturing
- Logging
- Roofing
- Shipbuilding
- Nursing and residential care facilities
4. Referrals from Other Agencies
Other government agencies refer workplaces to OSHA regularly. An incident that triggers a response from one agency often puts OSHA on notice at the same time.
Common referral sources include:
- Local fire departments after responding to workplace incidents
- Workers' compensation boards
- State labor departments
- Environmental agencies, especially after chemical spills
- Law enforcement responding to workplace accidents
5. Follow-Up Inspections
If your business has been cited before, OSHA may return to verify that you corrected the cited violations within the required timeframe. Failure to correct cited violations within the abatement period results in penalties of up to $16,550 per day per violation — on top of the original fine.
When you receive a citation, treat the abatement deadline as a hard deadline. Document your corrections with photos, updated records, and written confirmation from your safety personnel.
6. Media Coverage
High-profile workplace incidents that attract news coverage often prompt OSHA to investigate without a formal complaint. If your workplace is involved in a newsworthy accident — a serious injury, a structural collapse, a chemical release — assume OSHA is aware and may be in contact soon.
7. National and Local Emphasis Programs
OSHA runs National Emphasis Programs (NEPs) and Local Emphasis Programs (LEPs) that direct inspections toward specific hazards or industries for defined periods. These programs are publicly announced.
Recent and active emphasis programs have focused on:
- Heat illness prevention (ongoing — proposed rule in development)
- Silica dust exposure in construction and manufacturing
- Combustible dust in manufacturing
- Primary metal industries
- Trenching and excavation
Check OSHA.gov for the current list of active NEPs and LEPs in your region. If your industry or a specific hazard at your facility is covered by an active program, make that area a priority now.
What to Do When an OSHA Inspector Arrives
An inspection is not the time to panic — but it is the time to be deliberate. You have rights in this process, and how you handle the opening moments sets the tone for everything that follows.
Verify credentials
Ask the inspector to show their OSHA credentials. Confirm their identity and ask about the scope of the inspection — is it a complaint inspection, a programmed inspection, or a follow-up? You have the right to know.
Notify your safety officer or legal counsel
Before the walk-around begins, contact your safety manager or legal counsel if possible. You are entitled to a brief, reasonable amount of time to make that call. Do not delay the inspector unreasonably, but a short pause to get the right person on-site is reasonable.
Accompany the inspector throughout
Never leave the inspector unsupervised on your property. Designate a knowledgeable person — ideally your safety officer — to accompany them for the entire walk-around.
Document everything they document
Take your own notes and photos of everything the inspector photographs or measures. This protects you if there are disagreements later about what was observed.
Be cooperative but careful
Cooperate fully with the inspection. Answer questions honestly. Do not volunteer information beyond what is directly asked. There is a difference between being cooperative and being your own worst witness.
Request a closing conference
At the end of the inspection, request a closing conference. This is your opportunity to understand any potential violations observed, ask questions, and provide context or documentation that might affect the inspector's findings before any citation is issued.
After the Inspection: What Happens Next
If citations are issued, you will receive them by certified mail — usually within a few weeks of the inspection. You then have 15 working days from receipt to contest the citation, request an informal conference with the area director, or accept and pay the penalty.
Do not let that 15-day window close without a decision. Once it does, the citation and penalty become final and cannot be contested.
See our full guide: OSHA Fines and Penalties — What to Do After a Citation →