Is it permissible to work for a commercial company that deducts a portion of an employee's salary for a savings fund and adds 10% annual interest to it after the employee reaches the age of sixty?

Participation in the aforementioned savings scheme is impermissible because both the principal and the profit are guaranteed, making it a usurious loan. If the company compels its employees to participate, then working for it is not permissible unless out of necessity. In such a case, the employee should only take back their principal, which was deducted from their salary, and dispose of the usurious profit by spending it on public welfare.