This seems to be something that almost everyone as a worker knows, but ironically most managers don’t know; what is so hard about understanding that if you mistreat workers, they won’t do their job as intended?

If a manager over works an employee, they'll be too tired to give quality work, if they underpay an employee they won't put as much effort into their job, if they harass an employee they won't be willing to compromise for the manager, if they don't care about an employee they won't care about their job or the manager. Wouldn't all this be common sense? Obviously if someone is tired they'll be too tired to do their best, if they feel sick they can't work hard until they heal, list goes on. Is it really that hard to understand every action has a consequence? (Thx for reading, just had to let that out)