This makes sense in some industries. I'd like to think the companies that are capable of doing it without losing margin already have. It's not one size fits all though.
I would love to think that companies would think this way.
But if your manager has a manager, and that manager has a boss, and that boss has a CEO, and that CEO has shareholders, someone along the way is going to be unhappy that someone is 'getting over', and they aren't going to care if the work was done or not. Then a manager gets yelled at for sending everyone home early, and that's the last time that happens.
I knew a Florida contractor, and he had some sloooow moving laborers. He could never get a day's work done in a day. So he started telling them, If we get
xyz done, you get paid for a full day, whenever we finish. They would finish two hours early, he actually got more work done, and the laborers loved him. I thought that was brilliant, and marveled at how I really never saw that anywhere else.
I don't wonder why I don't see that anymore. People are petty, and resent when someone else has/had it easier than them. It's human nature, it's the same nature that makes a person not quite as happy as they should be when their family/friends come into a windfall.
I ran a restaurant where the kitchen manager was on salary, and he was expected to work 50 hours (this is
standard in any kitchen I have been around). Well, when he was hourly, he would work 51-54 hours a week. When he went to salary, he would never work more than 51 hours. This bothered my owner to no end. He would check payroll every week, and beeyotch that his kitchen manager was only working what was required. Complete and total ****head.
My company, 40 hours in 4 days is common, and the worker bees really like it. 3 day weekend every week. If that 4th day, they have accomplished everything I wanted, I'll cut them an hour or two early. Same amount of work done, and you cannot put a price on that kind of employee goodwill. People making $20-$25/hour are not used to being treated as anything other than disposable.