Summer job packaging agricultural pesticides. Many of my coworkers spoke English as a distant second language. Corrugated metal building with no A/C and poor ventilation. Wearing heavy coveralls, heavy-duty rubber boots and gloves, and face shield. Bryan/College Station, Texas in July.
At the end of each shift, I would literally pour sweat out of my boots.
Amazingly, I lasted a little over two weeks on that job. I was definitely not cut out for that kind of labor, and my productivity proved it. In a plea bargain, I was allowed to quit instead of being fired. My boss (who didn't bear any ill will against me) said I belonged in an office somewhere. I was still in college, so instead I got a job delivering pizzas (DoubleDave's, for those of you who know the area). Loved that job, and kept it for three years.
I’ve had alot of worst jobs but off the top of my head one of the hardest was inspecting truck brake assemblies on a factory assembly line.
They weighed 43# each and the 8 hour production rate was 2,300.
You had to pick them up, look them all over, repair anything not on correctly, and hang them on conveyor hooks that ran overhead.
Thats 98,900 pounds over your head in 8 hours, plus all the other stuff.