My employer has flat-out told me that I could not work fewer hours per week, even with a similar pay decrease. They need the work done, and they feel they need

My employer has flat-out told me that I could not work fewer hours per week, even with a similar pay decrease. They need the work done, and they feel they need me that many hours per week to do it. In theory, if they could find another person willing to work fewer hours per week (Hint: They can't), the 2 of us could halve our hours... But that's 2 developers to handle instead of one, which is harder for the managers. So it's not just that we want a higher quality of life. There are other factors at play as well.