So nice of your friend to work for you ! Don't forget to help other back !
This Mobage friend is actually a bit less efficient than a regular rookie worker! Though the Mobage friend worker DOES have a bit better quality than the rookie worker, it does have 2 less speed then the rookie worker. Unless you'd like to have this worker just as a slight show of appreciation to your friend, you're better off buying a rookie worker from the shop.