Your Right to Form a Union
Workers have the right select a union to negotiate on their behalf. Explore this page, which describes how a bargaining unit is formed. Also note that, in addition to electing a union, there is another way in which workers can gain union representation. Union representation is formalized when an employer voluntarily recognizes the union as the workers' representative.
Click https://www.nlrb.gov/rights-we-protect/whats-law/employees/i-am-not-represented-union/your-right-form-union link to open resource.