Clem,
You are correct. If the installer is an employee and being paid by the hour then by all means expect him to do everything on the work order. And then he will leave.
However, my rate for all custom work is sixty dollars an hour plus materials. No tipping is required....checks or cash for services rendered please. I am a contractor paid to do the basic FREE installation.
Somewhere in between the private contractor rates ( I am cheap when local) and what DTV will charge for a return visit to authorize the installer to do the custom work on the NEW WORK ORDER is where tips could smooth things out.
And, ya know, the tips and checks have always been nice but the thing I always appreciated more were the sandwiches and pie packed for the ride home after all the stores were closed. Beer and conversation was nice too.
Joe