What is the ruling on the monthly deductions made by the "General Mutual Aid Society for Employees" from employees' salaries, which cover a portion of their treatment, medication, and surgical expenses?

Financial cooperation among employees (mutual aid) is permissible if it is a donation, and the funds are not deposited in interest-bearing banks or invested in prohibited activities. However, if it is a compulsory contract, it is a form of health insurance that involves jahalah (ignorance) and gharar (excessive uncertainty), and it is not permissible for a Muslim to voluntarily subscribe to it. But if one is compelled to participate and cannot extricate oneself, there is no sin in paying, and one may only take back from them an amount equivalent to what was paid, should the need arise.