An employer shall provide reasonable break time to an employee who needs to express breast milk for her nursing infant child each time the employee has the need to express milk for one year after the child’s birth. The break time may run concurrently with any break time already provided to the employee. An employer may not reduce an employee’s compensation for time used for the purpose of expressing milk or nursing a baby. An employer shall provide reasonable break time as needed by the employee unless to do so would create an undue hardship as defined by item (J) of § 2-102 of the Illinois Human Rights Act.