If the book says it takes 1 hour to do the job, the 1 hour is all I'd pay. I don't care why it took the tech longer. Not my problem. (But then I do 99% of my own labor).
One thing I have heard and believe is that the MOCO doesn't pay the same hourly rate as customers and they don't pay the 1 hour (or whatever minimum). I also caught a car dealer that told me the failure wasn't covered by warranty, I asked for the used parts and the tech said they needed to return them as part of the warranty claim. They were charging me and claiming warranty.
One thing I have heard and believe is that the MOCO doesn't pay the same hourly rate as customers and they don't pay the 1 hour (or whatever minimum). I also caught a car dealer that told me the failure wasn't covered by warranty, I asked for the used parts and the tech said they needed to return them as part of the warranty claim. They were charging me and claiming warranty.