Yellow Dog Contract

A yellow dog contract is an employment agreement in which a worker promises, as a condition of being hired or keeping a job, not to join or remain a member of a labor union. These contracts gave businesses the right to seek legal action against the employee for breach of contract if they chose to organize at a later time.

The term is derogatory by origin: “yellow dog” was period slang for something worthless or contemptible, reflecting the contempt workers and labor advocates had for these agreements.

Yellow dog contracts were common in the early 20th century, but are typically not seen today as they are considered an unfair labor practice that interferes with an employee’s collective bargaining rights. While federal law prohibited the use of yellow dog contracts in the private sector in 1932, such contracts were still allowed in the public sector until the 1960s.

How a yellow dog contract works

Under a yellow dog contract, an employer required a job applicant or current employee to sign a written agreement stating they were not a union member and would not join one during their employment. Refusal to sign typically meant denial of employment or termination.

Courts in the late 19th and early 20th centuries upheld these agreements as valid exercises of freedom of contract. However, the Norris-LaGuardia Act of 1932 significantly limited the federal court’s ability to issue injunctions in labor disputes and made yellow dog contracts unenforceable.

The National Labor Relations Act of 1935 (NLRA) further reduced the legality of yellow dog contracts in the private sector as it guaranteed employees’ rights to collective bargaining, including the right to form and join unions.

Key characteristics

A yellow dog contract has a specific structure and a fixed legal status today. These characteristics define what made the agreement work and why it no longer does.

• Anti-union condition. The core element is an employee’s promise not to join or support a labor union.
• Coercive context. The agreement is a precondition of employment, not a freely negotiated term.
• Written or verbal form: Employers could impose these agreements in writing or as a verbally understood condition of employment.
• Now unenforceable: Any employment agreement containing such a term is void under federal law.

Yellow dog contracts vs. non-compete agreements

Yellow dog contracts and noncompete agreements restrict different activities.

A noncompete agreement generally restricts a worker from joining or starting a competing business after employment ends. A yellow dog contract restricts union membership or activity as a condition of employment.

Non-compete agreements remain enforceable in many states under certain conditions. Federal law categorically prohibits yellow dog contracts and has for nearly a century.

Related terms

The following terms help in understanding various employer-employee related concepts.

• Employment agreement: A contract that establishes terms of an employment relationship between an employer and employee.
• Labor union: An organization that represents workers in matters involving wages and working conditions.
• Collective bargaining: The process by which unions negotiate employment terms on behalf of workers, the right yellow dog contracts were designed to suppress.
• At-will employment: An employment relationship that either party may generally end, subject to contracts and applicable law.

FAQs about yellow dog contracts

Who benefited from yellow dog contracts?

Employers, particularly large industrial operators in mining, steel, and railroads, were the primary beneficiaries. These agreements gave them a legal mechanism to block union organizers. Once courts recognized them as enforceable, they were used to obtain injunctions against unions attempting to organize workers for any kind of protests.

Why is it called a yellow dog contract?

Anti-union contracts have been around since at least the 1870s, but the term yellow dog contract appears to have been coined sometime after World War I. It’s generally believed that the derogatory term is aimed at employees who sign such contracts, deeming them to be cowardly and subservient to their employers like a “yellow dog.”

Can a modern employment agreement accomplish the same thing under a different name?

No. The prohibition under the Norris-LaGuardia Act and the NLRA applies to the substance of the restriction, not the label attached to it. No provision in an employment contract can lawfully condition employment on a promise not to join a union.

What happens to an employer today who includes anti-union language in an employment contract?

Conditioning employment on a promise not to unionize is an unfair labor practice under the NLRA. The offending provision is void from the outset. The employee retains the full right to organize or join in a union, and the employer cannot use the agreement as a basis for termination or discipline related to union activity.