My wife already does that. I typically work 12 hours/6 days per week, but it's all at my home office. I put it 56 hours M-Th of this week.
I have worked 10 hour shifts and the 3 day weekends were great. I also worked 12 hour shifts, 4 days one week/3 days the next. Those get tiring but you wind up with around two weeks a month...at home with family rather than at work or burning money while sitting in “rush hour” traffic. The extra time where the kids would have (hopefully) both mom AND Dad home....could only be a good thing for the strength of our families.