Is it permissible to continue working in a mixed-gender environment with men, even though the female companions (Sahabiyat) used to work and converse with men, given that staying at home would prevent helping others, giving charity, and sponsoring orphans?

It is not permissible for a woman to work in mixed-gender environments if she is not in need, due to the corrupting consequences that arise therefrom. However, if she is compelled, it is permissible, provided she adheres to the hijab, does not soften her speech, lowers her gaze, guards against forbidden khalwa (private seclusion with a man who is not a mahram), and does not shake hands with men. The fundamental principle regarding a woman's work is permissibility, provided it adheres to the Islamic guidelines. The prohibition of mixing without necessity is a preventative measure to block the means to corruption.