The Railway Labor Act could be described as a substantive, rather than as a procedural law, in that it allows the government to dictate certain outcomes of negotiations and grievance processes.

Railway Labor Act

A federal law in the United States that aims to avoid work stoppages and labor-management disputes in the railway and airline industries.

Substantive Law

Substantive law defines the rights and duties of people and substantive legal principles within civil, criminal, and administrative law, distinguishing from procedural law which outlines how rights are enforced.

Government

The governing body of a nation, state, or community, responsible for creating and enforcing laws and managing public services and resources.