What is the ruling on the money earned by a woman working in mixed companies, and what is the ruling on accepting gifts from her?

Working in mixed-gender companies is forbidden due to the harms involved. A distinction must be made between work that is intrinsically forbidden, such as working in usurious banks where the resulting money is unlawful, and committing forbidden acts while engaged in permissible work. The wages or salary from permissible work are lawful, and the person committing sins associated with the work is sinful, but that does not render the money unlawful. Therefore, a woman's money earned from a mixed-gender company is not unlawful unless the company's work itself is forbidden (like selling tobacco or a usurious bank). There is no harm in accepting her invitation or gift and benefiting from her money, while it is obligatory to advise her to avoid mixed-gender environments or to seek another job. And if one's money is mixed with lawful and unlawful sources, there is no harm in eating from their food or accepting their gift.