grievance
//ˈɡriːvəns//
Noun
grievanceSingular
grievancesPlural
1
A real or imagined cause for complaint, especially unfair treatment.
The employees filed a grievance against the company for unfair treatment.
2
A formal complaint or protest, especially one made to an authority or organization.
She filed a grievance with the human resources department about unfair treatment.
3
A feeling of resentment or injustice at having been unfairly treated.
She harbored a deep grievance against her former employer for the unfair dismissal.