What is the Islamic legal ruling on retroactively reducing salaries and transportation allowances without prior notification?

Leasing is a binding contract, and neither party has the right to unilaterally terminate it. If the employee becomes entitled to the wage by making himself available and not refusing to work, then he is entitled to the full wage if the lessee terminates the lease before the agreed-upon term, unless there is a valid excuse preventing him from working.

Therefore, the aforementioned body must pay the full salaries for the three months in addition to the transportation allowance, as its action before the expiration of the contract term has no legal effect.