regular staff; permanent employee
Refers to staff directly employed by an organization, as opposed to temporary or dispatched workers. Often contrasted with 派遣職員 (dispatched staff).
See also: 派遣職員
This department has five regular staff members.
There is a difference in treatment between regular staff and dispatched staff.
派遣職員 refers to temporary staff dispatched from an agency, while 固有職員 are directly employed regular staff.
Compound of 固有 (inherent, own) and 職員 (staff member).