Answer:
Labor unions
Explanation:
A labor union also called the trade union is an association of workers who forms a legal unit called a bargaining unit that acts as a legal representative and bargaining agent for a unit of workers.
Labor unions are formed with the aim of improving the welfare of their members through improvement in benefits, pay and working conditions, through collective bargaining with the members employers.
In cases whereby labor unions and employers doesn't reach a desired conclusion that pleases both parties, labor unions may tell their members to go on strike. This is done in order to force the employers to agree to the requested demands.
