N * 200,000 ÷ EH
N = number of injuries and illnesses, or number of lost workdays.
EH = total hours worked by all employees during a month, a quarter, or fiscal year.
200,000 = base for 100 full-time equivalent workers (working 40 hours per week, 50 weeks per year).
Safety and Occupational Health Manager/Specialist GS-018
Safety Engineer GS-803
Fire Prevention Engineer GS-804
Industrial Hygienist GS-690
Fire Protection and Prevention Specialist/Marshal GS-081
Health Physicist GS-1306
Occupational Medicine Physician GS-602
Occupational Health Nurse GS-610
Safety Technician GS-019
Physical Science Technician GS-1311
Environmental Health Technician GS-699
Air Safety Investigation Officer GS-1815
Aviation Safety Specialist GS-1825
Chemist GS-1320
Health Technician GS-645
Highway Safety Manager GS-2125
or equally qualified military, agency, or nongovernment personnel. The agency head shall be responsible for determination and certification of equally qualified personnel.
29 C.F.R. §1960.2