Is it permissible for a Muslim to work for a non-Muslim in Western countries, and is the wage received lawful or unlawful, knowing that a non-Muslim does not differentiate between lawful and unlawful in sources of capital?

It is permissible for a Muslim to work as a hired hand for a non-Muslim if the work is permissible, such as carpentry, construction, and lawful trade, and the wage is lawful, provided that this does not result in humiliation or degradation for the Muslim.