In a modified union shop, workers are not required to join the union to be employed, but those who do choose to join must pay union dues. This arrangement allows for both union and non-union members to work within the same workplace, providing some flexibility while still supporting the union's financial stability. Typically, the union negotiates contracts that apply to all employees, regardless of their membership status.
A modified union
The answer is: Modified Union
A union closed shop is a workplace in which only union workers are allowed and to work and an open shop allows non union workers
This question needs to be rewritten. I can think of union terms for "open/closed" shops, but I am not sure this is what you want.
A business that will not employ non-union workers is called a "closed shop".
Open Shop.
An open shop is a business that does not require union membership to be an employee.
Union shop.
open shop
It is a closed shop.
The agency-shop policy allows both union and nonunion workers to be employed by an organization, but the nonunion employees must pay a union fee equal to union dues.
Right to work laws allow workers to work in a union shop without joining the union. Thereby prohibiting workers to be forced to join a union.