or do some other task that helps the company, like take out the trash or clean.

At McDonald's - Time to lean, time to clean.

Misaligned incentives, right? Rather than actually getting more productivity out of workers, they likely got less (or the bare minimum) because there was no reward to do more. If for example I do a job for a dollar and it makes the company 2 dollars and I can finish the quota in 6 hours, they should incentivize me to work the last two hours, as it makes them more. Punishing me with unpaid work loses them money, even if I do it, because likely, the time I would spend working a professional job will be worth more than the time they would pay for a person to do the cleaning or landscaping.

Now if we work for ourselves, like I do now, well, time is money. Seems like I am always trying to work ahead on various things in any gaps that show up in my day.

I think this is why successful companies are increasingly giving people stake in the company.