(1) be an employer or officer of an employer, or a member of the personnel of an employer:(a) who belongs to a group organization of employers that has entered into or become a party to an agreement, and who represents the group organization in a sector-based association; or
(b) who belongs to a group organization of employers that itself belongs to an association of group organizations of employers and has entered into an agreement or become a party thereto, and who represents the association in a sector-based association; or
(c) who belongs to an association including employers and group organizations of employers that has entered into an agreement or become a party thereto, and who represents the association in a sector-based association; or
(d) who belongs to a group organization of employers that itself belongs to an association including employers and group organizations of employers and that has entered into an agreement or become a party thereto, and who represents the association in a sector-based association; or
(2) be a worker:(a) who belongs to a group of workers constituted as a professional syndicate, union, brotherhood or otherwise that has entered into an agreement or become a party thereto, and who represents the group in a sector-based association; or
(b) who belongs to a group of workers that itself belongs to a group of syndicates, unions, brotherhoods or other groups of workers otherwise constituted that has entered into an agreement or become a party thereto, and who represents the group of syndicates, unions, brotherhoods or other groups of workers otherwise constituted in a sector-based association.