It depends on the days and times. My work actually allows an “alternate work week.” Friday-Sunday, 7am-5:30pm (with a 30 minute lunch). Then there’s the standard work week that I work—Monday-Friday, 8:00-4:30.
Personally I’d love to work just four days a week for ten hours a day, but the issue isn’t the times but the days. Sunday is church. Also, Tuesday early evening is rehearsal. If I could work Wednesday-Saturday for ten hours each day, that would be perfect. But the way they’ve got the days set only allows me to do the standard work week.