In A Small Business Small businesses are not immune from unions.
Unions can form in any business with more than one employee.
Understanding how to effectively and legally deal with a union can be an important part of running a business. The NLRA is designed to define and protect the rights of employers and employees, to encourage collective bargaining and to prevent certain unfair labor practices. The NLRA does not cover all of your employees. In addition, a single employee cannot form a union. Employees form unions by creating bargaining units.