Upon receipt of notice from the comptroller of a municipality with a population of 500,000 or more that a debt is due and owing the municipality by an employee of the board, the board may withhold, from the compensation of that employee, the amount of the debt that is due and owing and pay the amount withheld to the municipality; provided, however, that the amount deducted from any one salary or wage payment shall not exceed 25% of the net amount of the payment. Before the board deducts any amount from any salary or wage of an employee under this Section, the municipality shall certify that the employee has been afforded an opportunity for a hearing to dispute the debt that is due and owing the municipality. For purposes of this Section, “net amount” means that part of the salary or wage payment remaining after the deduction of any amounts required by law to be deducted and “debt due and owing” means (i) a specified sum of money owed to the municipality for city services, work, or goods, after the period granted for payment has expired, or (ii) a specified sum of money owed to the municipality pursuant to a court order or order of an administrative hearing officer after the exhaustion of, or the failure to exhaust, judicial review.