457.19—Party.
Party means any person, employee, group of employees, labor organization, Department, activity or agency:
(a)
Filing a complaint, petition, request, or application;
(b)
Named in a complaint, petition, request, or application; or
(c)
Whose intervention in a proceeding has been permitted or directed by the Assistant Secretary, Chief Administrative Law Judge, or Administrative Law Judge, as the case may be.