Answer:
open
Step-by-step explanation:
Since Devin is not required to pay anything or even join a labor union after employment, his workplace is called an open shop, according to the right-to-work law. In this kind of employment place, an employee's job is not conditioned by taking part in a union or paying any fees to it. This means that the employee can choose whether he/she wants to join a union or not
On the contrary, closed shops and union shops demand that their employees must be union members (or to become union members in a given period). Also, an agency shop is a type of workplace where employees can also decide whether they want to join a union or not. But, unlike in open shops, those who opt to remain "non-union" still have to pay a certain fee.