A more thorough explanation:

Definition: A sixty-day notice is a requirement under labor law, specifically the Taft-Hartley Act, that mandates either party to a collective-bargaining agreement to provide a 60-day advance notice to reopen or terminate the contract. During this period, strikes and lockouts are prohibited.

Example: If a company wants to terminate a collective-bargaining agreement with its employees, it must provide a sixty-day notice to the union representing those employees. This notice gives both parties time to negotiate and come to an agreement before the contract is terminated.

Explanation: The example illustrates how a sixty-day notice works in practice. It shows that the notice is a legal requirement that must be followed by both parties to a collective-bargaining agreement. The notice period allows for negotiations to take place, which can help prevent strikes and lockouts that could disrupt business operations.