Is it permissible for a Muslim woman to wear a wig over her hijab as a stratagem to maintain her hijab, due to work that prohibits wearing the hijab?

It is not permissible to wear a wig over the hijab (definition) to avoid removing it, due to the ensuing harms such as enticement and fitna (temptation/strife), except in cases of pressing necessity, such as the need for work. In such a case, it is permitted only to the extent of that necessity, until the Muslim woman finds other work or no longer needs to work.