To make "好少可" (rarely) and "成日" (all the time) likely responses, your question needs to be "Do you take a break at work?"
Imagine that you ask someone "HOW OFTEN do you take a break a work?", and you get a response 成日, what would you think he actually means?
Imagine that you ask someone "HOW OFTEN do you take a break a work?", and you get a response 成日, what would you think he actually means?