Is the sentence correct?

[KLPNO]

Hello everyone
I'd like to ask if the following sentence is correct.

Annually, employees working in potentially hazardous conditions undergo a periodic medical examination to receive a fitness to work certificate certificate and for prophylaxis of occupationally related diseases.

[Anglika]

Hello everyone
I'd like to ask if the following sentence is correct.

Annually, employees working in potentially hazardous conditions undergo a periodic medical examination to receive a fitness to work certificate certificate and for prophylaxis of occupationally related diseases.

I would hyphenate "fitness-to-work" - and you only need certificate once

"prophylactics against occupational diseases".

[KLPNO]

I would hyphenate "fitness-to-work" - and you only need certificate once

"prophylactics against occupational diseases".

Thank you very much, Anglika.

[susiedqq]

prophylaxis is a noun for "preventive treatment."

Is this what your employees will receive?

Annually, employees working in potentially hazardous conditions undergo a periodic medical examination to receive a fitness to work certificate and prophylaxis of occupationally related diseases.

[KLPNO]

prophylaxis is a noun for "preventive treatment."

Is this what your employees will receive?

Annually, employees working in potentially hazardous conditions undergo a periodic medical examination to receive a fitness to work certificate and prophylaxis of occupationally related diseases.

Thank you very much, susiedqq, for your reply.
To be honest, I'm not completely sure what word (prophylaxis or prophylactics) I should use. The russian sentence says that annually, employees undergo only a periodic medical examination and that this examination is prophylaxis of/prophylactics against occupational diseases, meaning that during this examination the very first signs of a disease can be detected and medical treatment in this case will begin earlier.

[Anglika]

"... and prophylaxis will be implemented where there is diagnosis of occupational disease".

[KLPNO]

"... and prophylaxis will be implemented where there is diagnosis of occupational disease".

Thank you very much, Anglika.