Forcing people to work in deadly heat is mostly legal in the U.S.

[moniss]

3. During the worst of the summer months

I knew roofers years ago who would start at dawn and quit work by 1:00 p.m. and that was long before all of these recent major heatwaves. Road crews and driveway pavers pretty much keep at it though. Maybe they slow a little in mid-day now with the extra heat. You have to be very careful about driving above 30 mph or so in this heat because if you don't have good tires and have the proper pressure in them they can blow very easily. Despite the danger of theft it is a good idea to leave your car windows cracked open a couple of inches to let the heat escape when you park for long periods. Then when you first get to the car open all the windows right away and do not turn on your A/C for a couple of minutes. When you do turn it on just run it for a minute or so and shut it off for a couple of minutes and then let it run like normal. You need to cool that interior a little slower than normal so you don't risk cracking your windows. Here is a video from about 6 years ago and it's much worse now.