“A "9/80 schedule" means that on 4 days per week you work 9 hours, and on the 5th you either work 8 hours or you have a day off. So for example, you may work 9-hour days Monday through Thursday, and on Fridays, you either work an 8-hour day or take the day off. 9/80 means that you work 80 hours over 9 days, instead of the traditional 10.”
I suspect this is a little confusing to any day care that doesn't also operate 9/80. I did 4/10s for my kids entire day care "career" and that was enough to really confuse them a couple times.
Another fun day care problem is some bill by week and make the employees watch the clock like hawks to make sure no one is getting more than their fair share, while others bill by the hour and don't care if you're late, in fact they enjoy the extra money. Both sides sometimes insist the other side doesn't exist and their way is the only correct way to run a day care. Obviously 9/80 or 4/40 or anything more exotic than 9-5 M-F is going to need some care in selecting the correct day care billing model
(Note strange, yet honestly serious possible startup topic: brokering parents with day cares WRT weird schedule constraints and location constraints)
I think it's partly that a lot of 8-hour-day jobs bleed towards 9 hours, but (explicit) 9 hour days are less likely to bleed up to 10. But even at stated hours, it's got a lot of advantages. Free weekdays are incredibly useful, and the ability to schedule around 3 day weekends (or 4 day weekends on holidays) is a huge hit with people who want to take any kind of short trips.
“A "9/80 schedule" means that on 4 days per week you work 9 hours, and on the 5th you either work 8 hours or you have a day off. So for example, you may work 9-hour days Monday through Thursday, and on Fridays, you either work an 8-hour day or take the day off. 9/80 means that you work 80 hours over 9 days, instead of the traditional 10.”
https://workfamily.sas.upenn.edu/glossary/n/nineeighty-work-...
Sounds great to me