DART = Days Away, Restricted or Transferred — the OSHA metric for serious workplace incidents: causing days away, restricted activity, or job transfer. Compute the DART rate and TRC rate, and compare against the industry average.
OSHA formula: DART rate = (DART case count × 200,000) / total hours worked
Example: 3 DART cases in 100,000 hours worked → (3 × 200,000) / 100,000 = 6.0.
TRC (Total Recordable Cases, also called TRIR) uses the same formula, but its numerator is all cases recordable under OSHA criteria — not just DART cases.
Example: 5 recordable cases in 250,000 hours worked → (5 × 200,000) / 250,000 = 4.0. Because DART cases are a subset of recordable cases, the TRC rate is always equal to or greater than the DART rate on the same data.
Enter your company’s rate and the industry average (e.g. from BLS publications) to see its relative position.
Example: 6.0 ÷ 2.1 = 2.86 — the company rate is 2.86× the industry average.
ILLUSTRATIVE
| Sector (example) | Illustrative average DART | |
|---|---|---|
| Construction | 2.1 | |
| Manufacturing | 2.4 | |
| Retail trade | 1.6 | |
| Transportation & warehousing | 3.0 | |
| Healthcare | 1.9 |
The 200,000 figure is OSHA’s standardization base so companies of different sizes can be compared:
100 workers × 40 hours/week × 50 weeks/year = 200,000 hours
This means the resulting rate can be read as “cases per 100 full-time workers per year”.
| Metric | Numerator | Hours base |
|---|---|---|
| DART | Cases with days away, restriction, or transfer | 200,000 (OSHA) |
| TRC / TRIR | All OSHA-recordable cases | 200,000 (OSHA) |
| LTIFR | Injuries causing lost work time | 1,000,000 (common practice outside the US) |
DART stands for Days Away, Restricted or Transferred: work-related injury or illness cases that cause a worker to be absent, have restricted work activity, or be transferred to another job. The DART rate measures these serious cases per 100 full-time workers per year.
OSHA formula: DART rate = (DART case count × 200,000) / total hours worked by all employees. Example: 3 DART cases in 100,000 hours worked gives (3 × 200,000) / 100,000 = 6.0.
The 200,000 figure is OSHA’s standardization base, equivalent to 100 full-time workers × 40 hours per week × 50 weeks per year. The same base is used so small and large company rates can be compared fairly.
DART counts only serious cases (days away, restriction, or transfer). TRC (Total Recordable Cases) or TRIR counts all cases recordable under OSHA criteria, so its value is always equal to or greater than DART. LTIFR (Lost Time Injury Frequency Rate) is a similar metric commonly used outside the US with a base of 1,000,000 hours worked instead of 200,000.
Only actual hours worked by all employees, including part-time and temporary workers. Vacation, sick, holiday, or other paid leave hours are not counted, per OSHA recordkeeping guidance.
The DART rate is a metric from the United States OSHA recordkeeping system, not a legal obligation in Indonesia. Companies in Indonesia may use it as an internal benchmark for tracking workplace accident trends, but reporting obligations follow Indonesian labor regulations.
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