A more thorough explanation:

A joint board is a committee that is typically composed of an equal number of representatives from management and the union. Its purpose is to conduct grievance proceedings or resolve grievances in the context of labor law.

For example, if an employee feels that they have been unfairly treated by their employer, they can file a grievance with the joint board. The joint board will then investigate the matter and make a decision based on the evidence presented by both the employee and the employer.

Another example of a joint board in action is during contract negotiations between a union and an employer. The joint board may be responsible for negotiating the terms of the contract, including wages, benefits, and working conditions.

Overall, joint boards play an important role in ensuring that both employees and employers are treated fairly and that disputes are resolved in a timely and effective manner.