I can think of a bunch of areas where this kind of bill would degrade people's experiences with businesses:
- handoffs will suck. Someone's shift ends at 2pm and you take over. At 2:05 you realize you need to ask them if a client issue got resolved or if they did some important item on their task list. But now you're not allowed to. Lots of time will get wasted as a result.
- scheduling will get slower. This would impact founders if it was in California! For example VC firms (like mine) have executive assistants, and the expectation is something like "work 7-8 hours a day, and check email a few times in the evening in case something pressing comes up." But if you can't ask your EA to do a quick email check a few times in the evening, the thing that could've been scheduled today for tomorrow will instead be scheduled tomorrow for the future.
- if businesses need to hire more just to have a little more around the clock coverage, then prices go up for everyone. E.g. if 5% of work happens unpredictably between 5pm and 10pm, then either that work can get ignored until the next day (previous points), or someone can be hired to work 5pm-10pm -- but eventually that extra cost gets passed down to customers.