How many paid, logable, 'on the clock' hours in a row have you worked, and was it legal?

Ya got me I legally put in 18 before I became a trucker.
Not legally I have been on the job and going for close to 30, but that was years ago I wouldn’t do that now.

I occasionally worked back to back shifts (16 hours altogether) when I was younger and worked in a hotel. Only did it a couple times, and I was pretty useless at the end of it.

Back before a lot of computerization, I worked a number of 12 -14 hour days, from 5 a.m. until 8 or so at night, then home, eat, sleep, do it again. I worked on the floor of a stock exchange, the week of October 19, 1987, I did that for five days in a row and then 6 hours of trade reconciliation on Saturday.

8…I can’t imagine what you guys went through working two, even three 8-hour shifts. What kind of jobs were they?

When I was a projectionist this was my schedule for about a year:

Wednesday – 6:15PM until about 4AM (a normal night shift but I would stay late to do maintenance on the projectors and clean)

Since I worked Thursday morning I would just sleep at work.

Thursday – 10AM until about 6AM (Movies came in the morning so they had to be built and that took around 3 hours per film.. Sometimes we would get 8–10 new movies that would need to be built before Friday morning. And then at the end of the night I would have to break-down the movies we were losing. That was a much faster process. Then we had to screen movies before we could show them to make sure they were built correctly. I somehow always got screwed and had to screen a movie nobody else wanted to watch)

Since I worked Friday morning I would just sleep at work.

Friday – ~10AM until 6:15PM (Cleaning up the mess I made Thursday. Out of frame splices and so on on trailers and bad cues)

This was actually great and I enjoyed it. I banged out my 40 hours in two days.

I once lived on the premises of a start-up that I worked at for three weeks round the clock. I don’t think it was legal.

Ten hours as a receptionist at a finance company. My husband called and demanded that I come home regardless of what my boss said. And he said nothing; just looked uncomfortable. lol

I worked 24 hour shifts a few times in a juvenile detention facility, @dxs. We got comp time instead of overtime, so I guess it was legal. I know that when they went out of business I was owed $1400 in comp time, and wage was probably around $5 an hour at the time.
I know I regularly worked double shifts in the food factory. Maybe 3. More likely 2 and ½, so 20 out of 24 hours.

9am to midnight, it might have been a little after midnight actually. Probably it is legal. I was a manager in a retail store. It’s ridiculous and slave labor in my opinion. The next morning I had to be there at 8:00am. I’ve done 9am to 11pm many many times. It’s just wrong in my opinion. Abusive.

I need to add I was salaried not paid an hourly wage, so I’m not sure it even counts for this question. I didn’t make any extra money.

Outside of the Navy, I haven’t clocked more than 17½ straight hours. I’m not sure how legal that was,

During my Navy years, my longest workday was 70 (seventy) hours, but nothing the military does is ever illegal.