13:44 - 2017/12/19
It is permissible to work for Jews, Christians, and other non-Muslims, and taking wages from them, provided the work is not among the ḥarām works or detrimental to the general interests of Islam and Muslims.
Question: What is the rule pertaining to working for Jews, Christians, and other non-Muslims, and taking wages from them?
Answer: There is no objection to doing so by itself[1], provided the work is not among the ḥarām works or detrimental to the general interests of Islam and Muslims.[2]
1. Ayatollah Seyyed Ali Sistani, Question & Answer, Business & Buying & Selling .
2. Ayatollah Seyyed Ali Khamenei, Practical Laws of Islam, Q323.