Maryland Labor and Employment Section 3-503

      An employer may not make a deduction from the wage of an employee unless the deduction is:

            (1)      ordered by a court of competent jurisdiction;

            (2)      authorized expressly in writing by the employee;

            (3)      allowed by the Commissioner because the employee has received full consideration for the deduction; or

            (4)      otherwise made in accordance with any law or any rule or regulation issued by a governmental unit.