You can deduct dues and initiation fees you pay for union membership.
You can also deduct assessments for benefit payments to unemployed union members. However, you cannot deduct the part of the assessments or contributions that provides funds for the payment of sick, accident, or death benefits. Also, you cannot deduct contributions to a pension fund even if the union requires you to make the contributions.
You may not be able to deduct amounts you pay to the union that are related to certain lobbying and political activities