Is it permissible for an employee who was forced to accept a salary reduction to recover the financial difference without the company's knowledge, or to consider unpaid overtime hours as a recovery of this difference?

If the questioner entered into a lease agreement with the company for a specified period, the company does not have the right to terminate the contract except with the other party's consent. If the company terminates it unilaterally, it is obligated to pay the agreed-upon rent for the entire duration of the contract, and the questioner has the right to demand it. However, if he agrees to the salary change and chooses to continue working, he is not entitled to demand more than the new salary, and his being compelled to accept does not constitute coercion. As for overtime hours, if he worked them without an agreement to count them, he has no right to them. But if it was agreed to count them and the company did not pay him his wage, he may take its equivalent from the amount held by him and return the excess to the company, knowing that he is not permitted to withhold any of the company's funds without just cause.