Obtain the necessary forms for a deferred compensation agreement, including the employee's acknowledgement of the agreement and an IRS Form W-4P. A deferred compensation agreement is an agreement between a company and an employee that withholds paying some of the employee's salary.Deferred compensation agreements are usually reserved for key talent or highly compensated employees. Learn about common tax and Form 990 reporting issues associated with nonqualified deferred compensation arrangements. Complete the information requested in the Verification of Service and Salary (Form. Use this form to select how your existing Utah Retirement Systems (URS) 401(k) or 457 Plan is invested.