Labor Contracts, the union agrees not to strike or engage in any similar concerted actions

During the term of most Labor Contracts, the union agrees not to strike or engage in any similar concerted actions against the employer. The Grievance Procedure in the contract provides a mechanism for the union to surface and seek resolution to alleged contract violations during the term of the contract.

Of the five common grievance issues in the article, which issues did you most agree or disagree with, and why? Support your position with real-world anecdotes from your own life, a colleague, or the news.