Possible Clues:

• Unfairness of leave admitted by one with desire to turn up
• Injustice in the players' union
• I resign, overwhelmed by desire for overturning injustice
• Unfairness of popular union
• Unfairness when part of actors' union
• At work, actor's union reveals unfairness
• It's not fair what you have to be to act professionally
• Like an actor showing unfairness?
• Unfairness when part of actors' union
• As actors may be, exposing unfairness