In this case, it kills unproductive jobs. Payroll people are necessary but at the end of the day, they don’t produce anything you would want to buy. This means that if you keep more administrative jobds than you need, there will be fewer actuall things to go around. Hence everyone will be poorer on average (or realistically speaking, the rich will be poorer in the current system, but that is a different issue).
Anyway, keeping unproductive jobds to reduce unenployment is a dumb idea and is one of the main reason why communism sucked so much.
I have a better idea. Fire the whole payroll division and hire just one accountant. Since clearly, clearly, any number of payroll employees can sustain any company size, this is the most cost efficient way to go.
Oh you say one staff in payroll is not enough? Oh then I miss your point.