Frequency rate, frequency index for work-related accidents

The frequency rate is the number of occupational accidents ( work stopped more than one day) arisen during a period of 12 months by one million hours worked, while the frequency index is the number of occupational accidents for 1 000 employees.

Frequency rate
Frequency index

Frequency rate

Frequency rate ( called in French “taux de fréquence“) is the number of occupational accidents with leave for 1 000 000 worked hours

Method of calculation :

Frequency rate = number of accidents with sick leave X 1 000 000 /number of  worked hours

To calculate the number of  worked hours , you have to multiply  : staff full-time equivalent of the company and the number of working hours made every year by a full-time person.

Frequency index

Frequency index ( called in French “indice de fréquence“) is the number of occupational accidents for 1 000 employees.

To calculate the frequency index, you have to divide the number of accidents with a leave ( work stopped more than one day)  by the number of employees and then you multiply by , 1 000

Fréquency index = number of accidents with leave  x 1 000 / number of employees

 You can also read the following posts :

• Occupational accident, commuting accident : definitions
• Severity rate for work-related accidents
• Annual statistics of occupational accidents and occupational diseases in France
• Occupational accidents formalities
• Recognition and compensation of occupational accidents
• List of the French tables of occupational diseases ( General Social security system)