It's about not burning yourself out and promoting results over putting in hours. I'm sure if employees at 37signals want to work more, no one is going to stop

It's about not burning yourself out and promoting results over putting in hours. I'm sure if employees at 37signals want to work more, no one is going to stop them. You can be happy without working overtime at a job you love. The more time that your job allows you not to be there, the more time you have to pursue passions of your own choosing. This makes for more well-rounded, happier, employees. And it's this well-roundedness that's going to pay off for them in the long-run. Personally, I love that 37signals is challenging so much of the status quo in business.