A 457 is much like a 401(k), but designed specifically for public employees. Deferred compensation refers to money received in one year for work performed in a previous year often many years earlier.A salary, wage, commission, or compensation for personal services. This plan allows eligible employees to: Set aside money towards their retirement. Make Roth contributions that can grow tax-free. Use this form to enroll in a Utah Retirement Systems (URS) 401(k) or 457(b) Plan. Complete TC-20, Schedule H to determine nonbusiness income allocated to Utah and outside Utah.