Question

A company with a labor agreement under which union membership cannot be required as a condition of employment is considered a

Answer 1

A company with a labor agreement under which union membership cannot be required as a condition of employment is considered an open shop.
This means that the employees do not have to join a trade union in order to work there at this particular company. So regardless of the fact whether these workers are members of the union or not, they will be employed and paid equally.