Before a work trip with a client/employer:
Me: I’m going to have to rent some gear once we’re in town to complete some of these tasks.
Client: No problem.
Me: And what about this other project I’m working on for you, should we hire one of my guys while we’re gone?
Client: Oh definitely, we want that done ASAP.
After the trip.
Client: What’s all this on the invoice? As the owner of this company, only I can approve expenses - we can only cover about half of this. The gear and other guy’s rates are on you.
Client: Also, your agreed rate is too high so we’re going to have to start paying you less.
Me: Cool, uh… I’m not working for you anymore. Best of luck.