Completing the 300A: Tips for the mathematically challenged
To create the 300A Annual Summary, you must calculate the average annual employees and total hours worked. Are you confident on doing the math?
Determining the annual average number of employees might not require any math. OSHA says that if you pay about the same number of employees every pay period, you can use that as your annual average. For example, if you had roughly 50 employees all year, you could simply use 50 as the annual average. Remember to include temps from a staffing agency if you supervise their daily activities.
Some locations might have significant staffing changes due to growth, layoffs, or seasonal workers. These locations may need to calculate the average workforce. OSHA provides a four-step process:
- Add up the number of employees paid IN EACH PAY PERIOD during the year.
- Determine the number of pay periods. For example, if you pay every two weeks, you have 26 pay periods.
- Divide the number of employees by the number of pay periods.
- Round the result up to the next highest whole number.
To illustrate, suppose a department store (NAICS 452210) has 17 employees for most of the year, but hires 6 part-time workers during the holiday shopping season, increasing to 23 employees. The location pays them every two weeks and has 26 pay periods.
For simplicity, assume that during each of the first 21 pay periods of the year, the store had exactly 17 employees. They get counted every pay period, so 17 employees times 21 pay periods equals 357 employees.
During the last five pay periods, the location had 23 employees. They also get counted during those five pay periods, so 23 employees times five pay periods equals 115 employees.
Adding them up (357 plus 115) gives a total of 472 employees. When divided by the 26 pay periods, the average number of employees for the year is 19 (actually 18.15 rounded up to 19).
Certain employers (including department stores) must electronically file the 300A by March 2nd if the establishment had 20 or more employees at any time during the year. This department store must therefore file through OSHA’s Injury Tracking Application website because it reached 20 or more employees for at least one pay period.
Total hours worked
Determining the total hours worked probably involves your Human Resources or payroll department. They key is to count only hours worked, not hours paid. Do not include vacation, sick leave, holidays, or other non-working time even if employees were paid for that time. If some employees are not paid the by the hour (such as salaried or commission employees) you can estimate their total hours.
The total hours are used to calculate the Total Recordable Incident Rate (TRIR), or incident rate, which is expressed as a ratio of injuries per 100 workers. For instance, a rate of 2.3 means that for every 100 employees, 2.3 employees had recordable injuries.
However, the incident rate is actually a ratio of injuries per 200,000 hours worked (representing 100 employees working 40 hours per week for 50 weeks). This allows OSHA to compare locations regardless of part-time staff, since the rate depends on hours worked, not on the number of people. This is also why employers don’t count vacation or holiday hours; employees cannot get work-related injuries during those hours.
Key to remember: Correctly calculating your workforce size and total hours worked ensures an accurate 300A summary and incident rate.