___________is an authority appointed by the government to mediate dispute between parties brought to his notice, enjoying the powers of a civil court

Industrial relations or employment relations is the multidisciplinary academic field that studies the employment relationship; that is, the complex interrelations between employers and employees, labor/trade unions, employer organizations, and the state. (Source: Wikipedia)

Good examples of industrial relations are: Union organizing, collective bargaining and strikes. These three actions involve active participation of both organized labor and management.