There are many pros and cons with joining unionization. The benefits of union include the following: First, unions help in containing attrition. Second, labor unions play a role in production.
Third, unions have the power to negotiate on acceptable wages and benefits, which otherwise would be elusive for the workers. Fourth, unions often ensure that there is no discrimination based on gender, race, religion or any other grounds. Fifth, unions work on almost everything concerning workforce and also the organization thus facilitating a well formed bridge of communication. Lastly, unions monitor hours of work, incentives, overtime pay, insurance, provident fees, leave credits, compensation for loss and holidays among others.
Joining unions can also be disadvantageous in the following scenario: First, unions often time is expensive because of membership fees etc. Second, unions have the power to boost productivity. But they also have the power to facilitate unproductiveness. They can even influence strikes, arm-twist the owners or the management creating a mass scale attrition. Third, consistent demands or unjust demands of unions have often led to businesses bankcrupcy. Lastly, Promotions, welfare, benefits and all perks of labor unions may get unevenly shared especially among the inner while thenormal workers may not get benefited at all or equally benefited.
Thus, the purpose of a union is to protect the working conditions and employment status of its members fighting to maintain employment levels. There's also the simple fact that the more people there are in a union, the more power it will have, so they will fight to maintain union jobs, even when those jobs no longer make sense.