A union is an organized group of workers who come together to make decisions about conditions or their work..
Advantages:
1) There is increased job security.
2)Healthcare benefits.
3) Increased wages.
4) Job protection.
5) You can voice your opinion.
Disadvantages:
1) Majority Rules.
2) More competition.
3) The Union can abuse their powers.
4) Most people pay union dues.
5) Lockouts are more likely to occur.