The phrase "departmental heads" refers to the leaders or managers of different departments within an organization. They are in charge of overseeing the operations, tasks, and decisions specific to their department. Full definition
The role played by the secretary in an organization is vital because they have to coordinate regularly with departmental heads, and clients to ensure things are running smoothly within and outside the organization. (bestcoverletters.com)
They also liaise with other departmental heads to prepare and implement strategies effective for boosting sales and maximizing profits. (jobdescriptionandresumeexamples.com)
Jointly responsible with departmental heads in checking all equipment, vehicles, machines, and operating devices before the end of the day's job (jobdescriptionandresumeexamples.com)