The largest open room on Level Four is the one housing the employee work area for both departments on this level. The first set of workstations you encounter belong to the Department for the Regulation and Control of Magical Creatures. In the center of the room there are three sets of workstations, pushed together for easier coordination and respectively seating the department's largest divisions: the Magical Creatures Office, the Magical Beings Office, and the Spirits Office. Both the Pest Control, and the Enforcement division's workstations, on the other hand, are set up a little more inconspicuously to the side of the room, considering that these divisions' employees are usually not found at their desks.

Once you have walked past the workstations assigned to the Creatures Department, you reach the area where you are likely to find employees working for the Department of Environmental Regulation and Protection. The workstations have been arranged according to the employees' respective divisions; the Enforcement and Regulation Divisions forming the largest squares, whereas both the Oceanoizardry and Botany Divisions' workstations have been moved near the office walls to ensure that the generally unused desks are not in everyone's way.

You have to pass through here in order to reach the Creatures Holding Room, the Conference Room, the Break Room, the Greenhouses, and Olly Emmons-Clarke's Office.