how long has it been?A polite way to ask how much time has passed since an event or situation began. It is often used after てから or a verb in the て-form, such as 結婚してどれくらいになりますか (how long have you been married?).
JA: この会社で働き始めて、どれくらいになりますか。
EN: How long have you been working at this company?