The Washington Agreement to Join Petition (Joiner) is an agreement between employers and employees in the state of Washington. It is a form of collective bargaining agreement that allows employees to join an existing union contract. The agreement is an alternative to traditional bargaining and can be used to negotiate wages, benefits, and working conditions. There are two types of Washington Agreement to Join Petition (Joiner): voluntary and mandatory. Voluntary Joiner is an agreement where the employer and employees voluntarily agree to work under the existing union contract. Mandatory Joiner is an agreement where the employer is required to work under the union contract due to state law. The agreement is a way for both employers and employees to come to an agreement on wages, benefits, and working conditions without engaging in traditional bargaining. It allows for an organized, efficient, and cost-effective way to negotiate with unions. It is also a way for employees to gain access to union resources and protection, such as grievance procedures and health care benefits.