Comment by abeppu
I think one seriously broken thing is that every company seems convinced their work is important, and scales their sense of how important work items are relative to the company as a whole. Orgs and teams do the same.
You can be on a team that runs a service that's a small part of the overall company product offering, which may be a convenience rather than mission-critical to its clients, who themselves may be doing something BS, and that team may still want you to wake up at 3AM when something alerts. Making a blanket statement that just because a job wants you to wake up at 3AM means it must be important (nevermind more important than family responsibility) places way too much trust in the judgement of employers.
All of us here have been to school and know how utterly unimportant it is. If not, that is a serious case of amnesia. It's a storage unit for kids, guarded by the most dim-witted people from the community. So when somebody says they can't work because of their kid's school, then either that person does not care about their job, or the company is asking for something out of line. It's either of those two options, depending on what actually is the job.
My job is unimportant, so I can leave the phone off at night. If I had an important job, then the case would be different.