Both the Maintenance and Transportation departments are departments of Odd Squad. Despite the varying duties, they are combined into a single department.
Those who work in the Maintenance section of the department handle upkeep of Headquarters and its amenities. They are constantly busy, having hardly a moment to rest. Some Maintenance workers also build various equipment and issue them to agents, such as badges, keys, and Centigurp boxes.
In the case of those in the Mobile Unit, Maintenance workers handle upkeep of the Mobile Unit van by visiting at least once a week and making sure things run smoothly. Similarly, a group of Maintenance workers serve as mechanics for the van, referred to collectively as the "OSMU Pit Crew".
Those who work in the Transportation section of the department are referred to as "tube operators". They work primarily in the tube lobby, sending employees up through the tubes to their preferred destinations. They work under the current Tube Master General, who works at Tube Central Station in Australia.
Children who wish to be tube operators must attend the Odd Squad Academy.
Those who work or have worked in the Maintenance section of the department include:
Those who work or have worked in the Transportation section of the department, outside of Precinct 13579, include: