Legal analysis: if negotiation with the unit fails, you can only collect evidence yourself and sue the court for compensation. It is necessary to provide evidence to prove the fact of working part-time in the unit, the remuneration standard paid by the unit, the working hours and the remuneration payable. College students don't have the qualifications of the subject of labor relations and can't become laborers in labor relations, so it's not a labor relationship, but an employment relationship, and the labor bureau has no jurisdiction.

Legal basis: Article 119 of the Civil Procedure Law of People's Republic of China (PRC) must meet the following conditions: (1) The plaintiff is a citizen, legal person and other organization that has a direct interest in the case; (2) Having a clear defendant; (3) Having specific requests, facts and reasons; (4) It falls within the scope of civil litigation accepted by the people's court and is under the jurisdiction of the sued people's court.