OSHA term · Glossary
Bureau of Labor Statistics (BLS)
Verified vs OSHA sources · 2026-10-05
The federal statistical agency within the U.S. Department of Labor that collects, analyzes, and publishes data on workplace injuries, illnesses, and fatalities. BLS conducts the annual Survey of Occupational Injuries and Illnesses (SOII) — compiled from employer OSHA 300 logs — and the Census of Fatal Occupational Injuries (CFOI). SOII data drives OSHA's Site-Specific Targeting (SST) program: establishments whose DART rates significantly exceed their BLS industry average are placed on the SST inspection list.
Also known as: Bureau of Labor Statistics, BLS IIF
On this page
Bureau of Labor Statistics (BLS) at a glance
- SOII (Survey of Occupational Injuries and Illnesses): published annually, covers ~200,000 private-sector establishments.
- CFOI (Census of Fatal Occupational Injuries): tracks every work-related death using death certificates, OSHA reports, news media, and workers' compensation records.
- In 2023, private-sector employers reported approximately 2.6 million nonfatal workplace injuries and illnesses (BLS SOII).
- The DART rate and Total Recordable Case (TRC) rate are BLS's primary benchmarks for comparing injury severity across employers and industries.
- OSHA's Site-Specific Targeting (SST) program uses DART rates submitted via the Injury Tracking Application (ITA) to select establishments for programmed inspections.
- BLS is a statistical agency, NOT an enforcement agency — it collects data; OSHA enforces.
- BLS SOII participation is mandatory under 29 CFR 1904.42 for selected establishments. 1904.41 is a different duty with a different requester — it is the electronic submission of records to OSHA.
In plain English
The federal government's scorekeeper for workplace injuries. Every year BLS surveys hundreds of thousands of employers, adds up the injuries and illnesses from their OSHA 300 logs, and publishes the national numbers. OSHA then uses that data to decide which workplaces to inspect first.
What the rule says
“If you receive a Survey of Occupational Injuries and Illnesses Form from the Bureau of Labor Statistics (BLS), or a BLS designee, you must promptly complete the form and return it following the instructions contained on the survey form.”
In context
An enforcement, recordkeeping, or general-duty concept under the Occupational Safety and Health Act and 29 CFR. These terms define how OSHA inspects, cites, and penalizes employers.
Where this is written in OSHA's rules
- 29 CFR 1904.42(a)Read on eCFR / OSHA.gov
Example
A roofing contractor (NAICS 2381) with 22 employees records 4 OSHA-recordable cases and 3 DART cases in a year of 44,000 total labor-hours. TRC rate = (4 × 200,000) ÷ 44,000 = 18.2; DART rate = (3 × 200,000) ÷ 44,000 = 13.6. If that DART rate significantly exceeds the BLS industry average for roofing contractors, the establishment may appear on OSHA's SST inspection list the following year.
Why it matters
BLS injury data is the primary mechanism by which OSHA targets enforcement resources toward the highest-risk workplaces. An establishment's DART rate relative to its BLS industry average directly determines whether it receives a programmed SST inspection. High DART rates also affect workers' compensation premiums, OSHA settlement negotiations, and industry safety benchmarking — making accurate OSHA 300 Log recordkeeping a business-critical function.
BLS vs. OSHA — who does what?
BLS collects and publishes statistical data from employer injury logs; it does not inspect workplaces or issue citations. OSHA sets and enforces safety standards and can cite employers. The two agencies share data: OSHA's ITA system collects 300 log data that feeds BLS's SOII, and BLS data in turn informs OSHA's SST enforcement priorities. Neither is a subdivision of the other — both operate under the U.S. Department of Labor.
BLS Workplace Safety Surveys
| Survey | Scope | Primary Data Source | Published |
|---|---|---|---|
| SOII | Nonfatal injuries & illnesses, private sector | Employer OSHA 300 logs | Annually (typically October/November) |
| CFOI | All work-related fatalities | Death certificates, OSHA reports, news, workers' comp | Annually (typically December) |
Bureau of Labor Statistics (BLS): frequently asked questions
- How does BLS data affect whether my establishment gets an OSHA inspection?
- OSHA's Site-Specific Targeting (SST) program compares each establishment's DART rate — as submitted through the Injury Tracking Application — to the BLS average for its NAICS code. Establishments with rates significantly above the industry average are placed on the SST inspection list and may receive a programmed (unannounced) inspection. SST inspections are not triggered by a complaint or injury event; they are scheduled based purely on statistical comparisons.
- Is participating in the BLS annual survey mandatory?
- Yes. Under 29 CFR 1904.42, employers selected to participate in the BLS Annual Survey of Occupational Injuries and Illnesses must complete and return the survey form within the stated timeframe. Failure to respond is a violation of OSHA's recordkeeping rules and can result in a citation.
- What is the difference between the TRC rate and the DART rate?
- The Total Recordable Case (TRC) rate counts every OSHA-recordable injury or illness entered on the OSHA 300 Log. The DART rate counts only cases that resulted in Days Away from work, Restricted duty, or a job Transfer — a severity-weighted subset of TRC. Both are expressed per 100 full-time equivalent workers (using 200,000 labor-hours as the base). DART is the primary rate OSHA uses for SST targeting because it better reflects injury severity.
Related terms
More OSHA terms
The action an employer takes to fix a cited violation or eliminate a hazard OSHA identified during an inspection. The citation sets an abatement date, the deadline to correct the hazard, and within 10 calendar days after that date the employer must certify to OSHA that the violation was abated. Failure to abate accrues additional penalties of up to $16,550 per day.
Area DirectorThe senior OSHA official in charge of a specific OSHA Area Office — the local unit that runs inspections and enforcement in its geographic territory. The Area Director has the authority to issue citations, propose penalties, hold informal conferences with employers, and approve settlement agreements. When a Compliance Safety and Health Officer (CSHO) completes an inspection, it's the Area Director who ultimately issues the citation.
Competent PersonUnder OSHA's construction standards, a person who is capable of identifying existing and predictable hazards in the surroundings or working conditions, and who has the authorization to take prompt corrective measures to eliminate them. The role requires both knowledge and the authority to act, and is mandated by name in many specific standards — excavations, scaffolds, fall protection, asbestos, and more.
CitationThe formal written notice OSHA issues to an employer after an inspection, describing each alleged violation, the standard cited, the proposed penalty, and the date by which the hazard must be corrected (abated). OSHA must issue a citation with reasonable promptness and no later than six months after the violation occurred.
Closing ConferenceThe meeting at the end of an OSHA inspection where the compliance officer confers with the employer and informally advises them of any apparent violations found. Importantly, the closing conference discusses what was observed and the employer's rights — but it does NOT state final citations or penalties, which come later in the written Citation and Notification of Penalty.
Compliance Officer (CSHO)An OSHA Compliance Safety and Health Officer — the inspector who conducts workplace inspections. A CSHO presents credentials (a photo ID and a serial number), holds the opening conference, performs the walkaround, collects evidence, interviews employees, and recommends citations. CSHOs are either safety specialists or industrial hygienists.
ContestAn employer's formal challenge to an OSHA citation, penalty, or abatement date. To contest, the employer must file a written Notice of Contest with the OSHA Area Director within 15 working days of receiving the Citation and Notification of Penalty. Filing sends the case to the independent Occupational Safety and Health Review Commission (OSHRC); missing the deadline makes the citation a final, un-appealable order.
DART RateDays Away, Restricted, or Transferred rate — an injury-rate metric from OSHA 300-Log data: (number of DART cases × 200,000) ÷ total hours worked. DART cases are those with days away from work (Column H) plus those with job transfer or restriction (Column I). OSHA uses it to target inspections at higher-injury establishments.
Sources & verification
- 29 CFR 1904.42(a) (eCFR / OSHA.gov)
- BLS — Injuries, Illnesses, and Fatalities (IIF)
- OSHA — BLS survey requests (29 CFR 1904.42)
Reviewed by HazComFast against eCFR, OSHA.gov, NIOSH, and the Federal Register. Last reviewed 2026-10-05. This glossary is general information, not legal advice; OSHA State-Plan states (e.g. California, Michigan) may adopt stricter requirements.
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