Japanese phrase
___は何時間まで働けますか？ ___ wa nan ji kan ma de hatara ke ma su ka
Meaning
What is the maximum number of hours ___ can work?
When to use it
Asks about a person's maximum workable hours. This polite wording suits workplace or school settings and focuses on a limit rather than a fixed schedule.
Example dialogue
留学生は何時間まで働けますか？ ryū gaku sei wa nan ji kan ma de hatara ke ma su ka
What is the maximum number of hours an international student can work?
週に二十八時間までです。 shū ni ni jū hachi ji kan ma de de su
Up to twenty-eight hours a week.