Is a contract that stipulates the employee pays taxes and insurance invalid, and what is the ruling on the money earned from it, and what are the conditions for the permissibility of paying taxes, and what is the ruling on not paying them if they are permissible?

It is permissible for the employer to stipulate that they will not bear the taxes and insurance imposed on the employee's salary, but rather the employee himself will bear them.

Among taxes, some are legitimate and must be paid, while others are forbidden and taken unjustly.

Among insurances, some are permissible to subscribe to, such as cooperative Takaful insurance, and some are not, which is commercial insurance.

There is no harm in benefiting from money earned from work if the work is permissible and the employee performs it as required.