How are labor unions usually funded?

It will depend on the union in Question. My Union (Dairy Workers Union - New Zealand) charges members union dues as a percentage of workers pay. Other unions may charge differently. read more

You must be aware that labor union members in India are primarily from the factory workers. Trade Union formation and funding is governed by the Trade Union Act, 1926. Therefore, typically, labor unions in a factory run on subscription from the workers who are affiliated to a particular labor union. read more

Unions usually hold elections in the work place to allow workers to vote on whether to have a union and how much power the union will have. These are known as Collective Bargaining Elections. In some states when a union wins an election, all members of that workplace pay union dues. read more