Incident Rate Calculations Flashcards
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Read the first 7 Incident Rate Calculations flashcards as text
A company employs 50 temporary workers supplied by a staffing agency who work on-site full time. Whose OSHA 300 log should record their injuries?
Answer: Whichever employer supervises day-to-day work
OSHA requires the employer who supervises the employee's day-to-day work to record the injury, which is typically the host employer for on-site temp workers.
The 'days away' count on the OSHA 300 log for a single case is capped at:
Answer: 180 days
OSHA caps the number of days away from work or restricted/transferred at 180 days for recording purposes on the 300 log.
A worker is injured on a Monday and returns to full duty Thursday. How many days away from work are recorded?
Answer: 2 days
Days away = Tuesday and Wednesday (the day of injury is NOT counted); returning Thursday means 2 calendar days away.
To calculate a fatality rate per 100,000 workers, the formula denominator uses:
Answer: 2,000,000 hours
Fatality rate = (fatalities × 200,000,000) / total hours, because 100,000 workers × 2,000 hours/year = 200,000,000 — but it is commonly expressed as fatalities per 100,000 workers directly.
A company's TCIR dropped from 5.0 to 2.5 year over year while hours worked doubled. The most accurate interpretation is:
Answer: The injury rate improved even if absolute cases stayed the same
Rates normalize for workforce size; if hours doubled and TCIR halved, absolute cases could stay constant yet the rate still shows meaningful improvement per exposure hour.
Which of the following is a leading indicator, as opposed to the lagging indicator represented by TCIR?
Answer: Near-miss reporting rate
Near-miss reporting rate is a leading indicator that predicts future risk, while TCIR, DART, and days away are lagging indicators reflecting past injuries.
An OSHA 300 recordable illness is required when a work-related illness results in:
Answer: Days away, restricted duty, medical treatment beyond first aid, loss of consciousness, or diagnosis by a healthcare professional
OSHA's general recording criteria require logging any work-related injury or illness meeting any one of these thresholds: death, days away, restricted/transfer, medical treatment beyond first aid, loss of consciousness, or significant diagnosis.