A Yellow-Dog Contract is a type of employment agreement in which an employee agrees not to join or support a labor union during their employment tenure. These contracts are often used by employers to discourage unionization within their workforce.

Example
An employer might include a clause in an employment contract stating that the employee cannot join or participate in any labor union activities while working for the company. For instance, "Employee agrees not to become a member of, or participate in, any labor union or engage in any activities that promote unionization during the term of employment with the Company."

Note

Yellow-dog contracts are prohibited by federal labor laws in many countries, including the United States, as they are seen as an infringement on workers' rights to organize and collectively bargain.