Field Operations Manual (FOM) explains how OSHA structures enforcement internally—setting out the procedures inspectors follow, the definitions they apply, and the decision frameworks that guide documentation and citation development. While the FOM itself spans hundreds of pages and is periodically updated, it does not create new law; instead, it interprets and operationalizes existing standards. In practice, it influences how tens of thousands of inspections each year are conducted and recorded, shaping consistency across regions. Understanding the FOM helps clarify what inspectors are instructed to evaluate—and where policy guidance ends and regulatory requirements begin.
The OSHA Field Operations Manual (FOM) explains how OSHA staff are instructed to conduct inspections, evaluate evidence, and apply enforcement policy. It guides inspectors—but it is not itself a regulation.
What the FOM is
The Field Operations Manual is OSHA’s internal playbook for enforcement. It provides inspectors with procedures, definitions, and decision frameworks for how inspections should be conducted and documented.
In practice, the FOM promotes consistency across inspectors, offices, and regions.
What the FOM is not
- It is not a regulation or standard
- It does not override the OSH Act or OSHA regulations
- It does not guarantee a specific enforcement outcome
- It does not eliminate inspector judgment or discretion
Courts and review bodies often consider the FOM persuasive—but not binding.
What the FOM typically covers
- Inspection procedures and sequencing
- Evidence collection expectations
- Interview guidance
- Violation classification criteria
- Penalty calculation guidance
- Documentation standards
How inspectors use the FOM
Inspectors use the FOM as a reference to ensure inspections are conducted consistently and defensibly. It helps inspectors decide what information to gather, how to document findings, and how to frame recommendations for enforcement.
The FOM guides the process—but inspectors still observe, interpret, and exercise judgment in real time.
Why employers should understand the FOM
Employers do not need to memorize the FOM, but understanding its role helps explain:
- Why inspectors ask certain questions
- Why specific documents are requested
- Why some issues receive more attention than others
- How inspection records are structured
Common misunderstandings
- “If it’s not in the FOM, OSHA can’t cite it.”
- “The FOM is enforceable law.”
- “Inspectors must follow the FOM word-for-word.”
- “The FOM protects employers from citations.”
The FOM supports enforcement—it does not replace statutes, standards, or legal review.
Practical vignette
In practice: Casey, a safety manager, notices that inspectors consistently ask about training records, corrective actions, and hazard recognition. By understanding the FOM’s role, Casey prepares documentation in advance and avoids reactive, piecemeal responses during inspections.