Hi,
Your question is ambiguous. It is the responsibility of the employer to ensure that exit routes are without any obstruction or unwanted things are just dumped on the way.
Normally, a workplace must have at least two exit routes to permit prompt evacuation of employees and other building occupants during an emergency. More than two exits are required. Exit routes must be located as far away as practical from each other in case one is blocked by fire or smoke.
Note : : If the number of employees, the size of the building, its occupancy, or the arrangement of the workplace allows all employees to evacuate safely during an emergency, one exit route is permitted