That's literally missing the entire point of it. You already have this now - always had it. There's nothing new or interesting about what you're "proposing".
What IS new and interesting is getting employees who work 20% less, AND THEREFORE are 20% more productive (and presumably 20% happier), at the same cost.
What IS new and interesting is getting employees who work 20% less, AND THEREFORE are 20% more productive (and presumably 20% happier), at the same cost.