Washington Collaborative Law Notice of Participation is a form used by parties involved in a collaborative law process, who seek to resolve their disputes through a non-adversarial, cooperative approach. The form outlines the responsibilities of each party, and sets out the terms of the agreement for the collaborative law process. The Washington Collaborative Law Notice of Participation is typically signed by all parties involved in the dispute. There are two types of Washington Collaborative Law Notice of Participation: 1) Pre-engagement Notice — This form outlines the process for entering into a collaborative law agreement and is signed by all parties before the process begins. 2) Termination Notice — This form sets out the terms for terminating the collaborative law process, and is typically signed by all parties when the process is complete.