The term "exclusive bargaining agent" refers to a labor union that has been designated by employees as their sole representative for collective bargaining purposes. Full definition
As Justice William Brennan wrote in Retail Clerks v. Lion Dry Goods, the Act's coverage «is not limited to labor organizations which are entitled to recognition as exclusive bargaining agents of employees... «Members only» contracts have long been recognized.» (californiapolicycenter.org)
While Ms. Bernard has a right not to become a union member, she does not have the right to opt out of the union's role as exclusive bargaining agent for all bargaining unit employees, including her. (slaw.ca)
The union is exclusive bargaining agent for all members of the bargaining unit and has representational duties — such as in collective bargaining, the grievance process, workforce adjustments, prosecuting complaints, and conducting strike votes. (slaw.ca)