Work smart, not long
There’s only so much time in a day, so encourage your employees to think differently when it comes to their daily tasks. Is there a way they could be done faster with tighter prioritisation? Suggest a time limit per task, and ask them to look out for and avoid any activities that have a negative impact on efficiency. This might be holding spontaneous meetings or volunteering to take on more work than is feasible. Optimising productivity between 9 and 5 means overtime will no longer be necessary, and your staff can spend their personal time focusing on themselves.
Take structured breaks