Let's look at the inverse:
Does the tech get paid for their mistakes (rework) when the company does not?
Does the tech drive out of the way to get lunch using the company's truck and fuel?
Does the tech ever use the truck and fuel for personal use?
Does the tech never take longer to complete a job than it was quoted for?
Does the tech never misdiagnose and cost either the customer or employer undue expenses?
Take a look at flat rate in the automotive world. You don't get paid for rework, you get no van, you get no fuel, you stand around without getting paid when it is slow. So, what is fair?
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