Each hotel and casino shall equip an employee who is assigned to work in a guest room, restroom, or casino floor, under circumstances where no other employee is present in the room or area, with a safety device or notification device. The employee may use the safety device or notification device to summon help if the employee reasonably believes that an ongoing crime, sexual harassment, sexual assault, or other emergency is occurring in the employee's presence. The safety device or notification device shall be provided by the hotel or casino at no cost to the employee.