Serious Violations

OSHA reserves the serious classification for hazards with substantial probability of death or serious physical harm where the employer knew or should have known of the hazard. The "knew or should have known" standard is the legal trigger — inspectors must document that the hazard was visible, that industry practice would have flagged it, or that the employer had received prior warnings. Serious citations carry per-citation penalty maximums in the mid-five-figure range under the Department of Labor's annual penalty schedule, and they are by far the most common classification in the federal enforcement record.

For full definitions and the controlling penalty schedule, the U.S. Department of Labor's Occupational Safety and Health Administration (OSHA) publishes the underlying standards, and the Enforcement Results Data files are the primary public source for citation history.

Serious citations are by far the most common classification in the federal enforcement record. The 14,680 employers in this list collectively carry 30,689 serious citations, reflecting hazards with substantial probability of death or serious physical harm across a wide range of industries.

Industry-level injury benchmarks for the underlying hazards come from the U.S. Bureau of Labor Statistics' Survey of Occupational Injuries and Illnesses, which publishes annual incidence rates by NAICS code. Reading citation severity alongside BLS injury rates is the cleanest way to interpret whether a citation pattern reflects underlying hazard exposure or elevated enforcement attention.

For workers, an employer with a high serious-citation count has been cited multiple times for hazards with substantial probability of death or serious physical harm. The cleaner question is the share of serious citations relative to the total: a high absolute count combined with a low share usually means a large multi-site employer where any sufficiently large workforce will accumulate serious citations, while a high count combined with a high share signals genuine systemic issues.

Workers retain the full set of federal protections regardless of an employer's citation history. They can file confidential complaints at osha.gov/workers/file-complaint, request an inspection, and refuse imminent-danger work without retaliation under Section 11(c) of the Occupational Safety and Health Act. The OSHA Workers' Rights page spells out the full set of protections.

Counts on this page come from OSHA's public Integrated Management Information System (IMIS) enforcement file, refreshed from the Department of Labor's Enforcement Results Data files. Citations are aggregated by the violation classification recorded by the inspecting compliance officer at the time of the case. We do not reclassify citations or apply our own scoring to this severity page — the numbers are raw counts from the federal record.

The Workplace Safety Score shown on linked company pages applies four weighted factors: violation rate versus industry, share of serious-or-willful citations, repeat-citation ratio, and average penalty per inspection. Read the full methodology for the exact formula and edge cases.