The OSHA 300A is the summary of work-related injuries and illnesses. Unlike the 300 log, which lists individual incidents, the 300A only shows the totals for the year. It must be completed, certified by a company executive, and posted in the workplace every year.
Key Deadlines You Cannot Miss
- February 1: You must post the previous year's 300A summary in a visible location where notices to employees are customarily posted.
- March 2: If your establishment meets certain size and industry criteria, you must electronically submit your 300A data to OSHA's Injury Tracking Application (ITA).
- April 30: You may take down the posted 300A summary.
Compliance Tip
Even if you had ZERO recordable injuries or illnesses during the year, you must still complete the 300A, enter zeros in the total lines, certify it, and post it.
Calculating Total Hours Worked
One of the most critical parts of the 300A is calculating the "Total hours worked by all employees last year." This number is used to calculate your incident rates.
Include hours worked by salaried, hourly, part-time, and seasonal workers, as well as temporary workers who you supervise on a day-to-day basis. Do NOT include vacation, sick leave, or holidays.
Executive Certification
A company executive must certify that they have examined the OSHA 300 Log and that they reasonably believe the 300A summary is correct and complete. OSHA defines a company executive as:
- An owner of the company (if a sole proprietorship or partnership)
- An officer of the corporation
- The highest ranking company official working at the establishment
- The immediate supervisor of the highest ranking company official working at the establishment
A safety manager or HR director cannot sign the 300A unless they also meet one of the criteria above. This is a frequently cited violation during OSHA inspections.