Enter the totals from your OSHA 300A summary. You get your TRIR and DART rates and where they rank against companies your size in your industry, with a range that tells you how sure the ranking is.
A PDF you can attach to prequalification forms, bids and board updates.
All company sizes combined. The industry average weights big employers heavily; the median is the typical workplace. Many workplaces report zero cases, so the median is often far below the average.
| Industry | NAICS | Workplaces | Avg. TRIR | Median TRIR | Avg. DART | Zero cases |
|---|
200,000 hours is 100 full-time workers for a year, the standard OSHA base.
One injury at a 40-person shop gives a TRIR near 2.5. A simple ranking would call that firm worse than half its industry, though the difference is mostly luck. Large employers rarely swing that much.
It fits a Poisson–gamma model to each industry and size class, then pulls small-company rates toward the industry level in proportion to how little data they carry. The range shows where your true rate likely sits (80% interval).