Which of the Following Best Describes a "Yellow Dog" Contract

Multiple Choice

Which of the following best describes a "yellow dog" contract?

A) As a condition of employment, an employee agrees not to picket.
B) Union members agree to the agency shop form of union security.
C) Employers agree to give union members preference in hiring.
D) As a condition of employment, an employee agrees to not join a union.
E) Employers agree to abide by the guidelines of the local labor unions.