What did workers do when they signed yellow-dog contracts?

The yellow dog contract is an agreement the company forces each individual worker to sign, on the penalty of not getting the job (or if he already has the job, of losing it), binding the worker to surrender his right to organize. The simplest form of yellow dog binds the worker not to join a union.

Explanation:

In the United States, such contracts were, until the 1930s, widely used by employers to prevent the formation of unions, most often by permitting employers to take legal action against union organizers. In 1932, yellow-dog contracts were outlawed in the United States under the Norris-LaGuardia Act.

no every country is held to the same degree as others just some member countries such as the usa and germany are more economically sound so the need to show there support to all others