I think among Ni-dom Fe-aux or Fe-dom Ni-aux dealing with people at workplace can be such an unbearable pain. Working in a customer-servicing industry won't going to help you either because it doesn't manifest Fe-harmony. Perhaps it's much of a lesser challenge among Ne-Fe folks.
Generally for me, it really depends on my mental burden. If work is not too overwhelming, I tend to be able to get passed that. Though for INFJs, I think getting Fe'd out isn't a bad idea as your brain or physical body is urging you to take a break or a retreat. I would just take it as a sign for pampering myself by planning for a vacation or weekend getaway just to get recharged.