This is called a wage assignment. Wage assignments must follow the same rules for collection-proof income as other collection efforts.An assignment transfers title to the chose in action to the assignee, who becomes the real party in interest. 1. All valid assignments must be in writing and must contain express language establishing a trust over specific property for the benefit of creditors. First, fill out Letters to Creditor and Employer to Stop a Wage Assignment. Print the letters, and sign and date them. Today's video is focusing on the paperwork specifically the assignment agreement between you and your cash buyer. Assignments may be made only on approved payment amounts on the Illinois EPA's UST Fund Payment Priority List.