按时作息
work and rest according to the timetable
keep good hours 都可以的.
具体的翻译还可以看上下文,如：
They are forced to keep regular hours by the nature of their job.
由于工作性质的关系,他们只得按时作息.
The landlady said she would have no lodger who did not keep good hours.
那女房东说她不愿意有不按时作息的房客.