Grievance

n. complaint; resentment; wrong; injustice

In the world of work a grievance is a formal statement of complaint, generally against an authority figure. Procedures for grievance are common in unionized organizations. In many countries labor unions typically include a committee known as the Grievance Committee or Griefcom which deals with complaints of members against management.In an unionized organization, a grievance is a formal complaint against the employer, in written format, usually filed by a union steward on behalf of a member of the local union. It is typically understood as any difference arising out of the interpretation, application, administration or alleged violation of the collective bargaining agreement that is in effect at the place of employment but it can also concern violations of common law, such as workplace safety regulations or a human rights code.
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Noun
1. a resentment strong enough to justify retaliation; "holding a grudge"; "settling a score"
(synonym) grudge, score
(hypernym) resentment, bitterness, gall, rancor, rancour
2. an allegation that something imposes an illegal obligation or denies some legal right or causes injustice
(hypernym) allegation
3. a complaint about a (real or imaginary) wrong that causes resentment and is grounds for action
(hypernym) complaint

(v. t.)
Grieving; grief; affliction.
  

(v. t.)
A cause of uneasiness and complaint; a wrong done and suffered; that which gives ground for remonstrance or resistance, as arising from injustice, tyranny, etc.; injury.
  

A complaint about the way your Medicare health plan is giving care. For example, you may file a grievance if you have a problem calling the plan or if you are unhappy with the way a staff person at the plan has behaved toward you. A grievance is not the way to deal with a complaint about a treatment decision or a service that is not covered (see Appeal).