Employee relations refer to the formal and informal relationships between managers and employees. They include contractual obligations, communication, joint decision-making, problem-solving, collective bargaining, grievance policies, employee development and welfare. Unions often play an important role in these areas. Grievances are a common method used by workers and unions to resolve workplace problems. There are two types of grievances - individual grievances involving single employees, and collective grievances involving groups of workers. Grievance handling procedures typically involve multiple stages of escalation within the organization and may ultimately be referred to government bodies if unresolved.