Anecdotally, of the 4 days/week people I've worked with, there was never any thought that adding a fifth marginal day to their week would yield commensurate pro

Anecdotally, of the 4 days/week people I've worked with, there was never any thought that adding a fifth marginal day to their week would yield commensurate productivity returns. Value for money, the 4-day week constraint keeps people busy enough to actually get things done fast. I don't know what their difference in comp was, but my impression each time was they had negotiated the 4-day week against the cost of a consultant. e.g. As an employer, maybe you want to pay an employee $120k/y salary. To replace that employee with a contractor will cost you $220k/year. The employees pitch was, given what it would cost and what they can make consulting, they would take the offered $120k salary for a 4-day/week role. It's a question of value, not scaling to hours.