I've been there and done that when it comes to overtime and yes, even at time and a half the final take home paycheck didn't increase all that much.
It was an increase though.
When I went on salary for the last 25 years of my employment, like the others on salary, I got zero, zip, nothing for the overtime I worked.
Add to that, the company expected salaried people to work overtime. If you didn't you could expect to see absolutely no pay increase when review time came.
I'm not bitching about this. I earned a decent amount of money for my work but there were a lot of others on hourly pay who were earning more than I was per week if they worked the extra hours.