A retail establishment that has an employee toilet facility shall allow any customer to use such employee toilet facility during normal business hours if:
1. The customer does not have immediate access to a public restroom;
2. The employee toilet facility is not located in an area where providing access would create an obvious health or safety risk to the customer or others or an obvious security risk to the retail establishment;
3. The customer provides the retail establishment with evidence of the customer’s eligible medical condition. Such evidence shall indicate that the customer suffers from an eligible medical condition and shall either be a copy of a statement signed by a medical professional on a prescription form or an identification card; and
4. At least two employees of the retail establishment are working onsite at the time the customer requests to use the employee toilet facility.