What is the ruling regarding a Muslim woman residing in a land of disbelief, whose family are disbelievers, and who is subjected to harassment by them concerning wearing the hijab, and is unable to wear it at her workplace?

The hijab is an obligation for Muslim women, and it is not permissible for a woman to go out without it, even in non-Muslim countries. Harassment from family does not permit removing the hijab. One must leave work that compels its removal, except in cases of extreme necessity.