We've had honest mechanics too, one I could tell easily because when our vehicle made a noise and I had no idea what was causing it, called me later and said it was just a small part that cost a couple dollars or so, he could have easily made up a story and said it was something much more expensive.
It didn't happen where I grew up in Maryland, but a friend of mine that grew up in South Carolina said the milkman who delivered milk would actually come in the person's house very early in the morning and put the milk in their refrigerator as back then they generally didn't lock their doors at night. We had milk delivery when I was a kid but the milkman left it in the insulated milk case on the front porch meant for such deliveries.
It's sad because I'm sure there are many honest employees, but the dishonest ones make you leery not knowing which ones you can trust.
Not that there were no dishonest people back in the 1950's or earlier, but it did seem that back then it was somewhat easier to trust people moreso than today and that is sad as I like to try to give each individual the benefit of the doubt when possible.
I like sleeping good at night and believe in doing what's right and when I worked as a night auditor / desk clerk at a motel I had 4 times I can remember that a guest paying in cash for a several night stay overpaid by $100.00 without realizing it, I didn't even have to think about it, as soon as I realized it I gave them back the extra $100.00 telling them they gave me too much by mistake and they'd usually just give me a strange look as if it was so unusual for anyone to do that, but I'd just tell them "I sleep good at night"
I have to believe there are many more employees in other jobs that would do the same. Look at the detectorists on the forum who try to return class rings that have enough identification to try to do so.