ANSWER:

If he is a kafir, this seems permissible but if he is Muslim, you shouldn’t be working at the time of Friday prayers. 

QUESTION: If I give my goods to a courier rider and he delivers goods but does not pray on Friday or listen to Khutbah on his journey and on his way back, and also when he returns goods to me he does not pray Jumuah or listen to the Khutbah, then will my earnings be haraam? (I have to register to a courier company and take partnership to avail their services)