(a) workers who are entitled to benefits under the long-term disability plan may not terminate their employment relationship after the earlier date on which the dismissal takes place with a view to the opening of collective bargaining and the date on which collective bargaining begins; When their sickness benefit credits expire, they are placed on leave without pay until they receive long-term disability benefits. 153 A communication, order or other document or document that is to be served for the purposes of this Code may be given to or to the domicile of the person on whom it is to be served, or, if that person is an employer or union, by giving the authentic copy of the communication or document to the employer`s representative or to the head office of the union during normal activity. the board of directors may order that the provisions of a collective agreement of the type referred to in section 15 do not apply to the worker and that the worker is not required to join a trade union, to be a member of a trade union or to continue to be a member of a trade union or to pay dues, costs or predispositions to the trade union; where initiation, contribution or other taxation amounts are paid by the worker to a non-profit organization or transferred by the employer to a non-profit organization registered in Canada as a not-for-profit organization in accordance with Part I of the Income Tax Act (Canada) and which may be designated by the board of directors. (9) A designation under this Division may be amended, amended or revoked and another designation may be made in its place and, not subject to section 135, the House may, at its sole discretion, refuse, at its request or ex officio, to file its order with a registry of the Supreme Court. 69 An act carried out by two or more persons acting by agreement or combination where it is envisaged or insistently promoted by a labour dispute is not open to dispute, unless it was unlawful without an agreement or combination. 2. Every collective agreement shall include a provision for the final and definitive settlement of all disputes between the persons bound by the agreement, without a stoppage of work, by arbitration or by any other method agreed upon by the parties, which respect their interpretation, application, operation or alleged violation, including the question whether a matter is likely to be arbitrated. . . .