Answer:
Before the transfer is completed.
Explanation:
If you work in one sector of a company, but will be transferred to another sector where there is a risk of contamination by chemical agents, it is your employer's obligation to train you on the chemical risks of that new sector before your transfer is completed. You must start your new responsibilities in the new sector, knowing what the risks are, how to avoid them, what protective equipment is needed, what first aid in case of contamination and any and all information that can prevent the risks of this new sector.
