Article R4626-30 of the French Labour Code
The occupational physician may prescribe any additional examinations necessary : 1° To determine the employee’s fitness for the job and, in particular, to screen for ailments which contraindicate the employee’s suitability for the job; 2° Screening for an occupational disease or disease of an occupational nature likely to result from the employee’s work; 3° Screening for conditions likely to expose the employee’s family and friends to the risk of contagion….