The City of Los Angeles Deferred Compensation Plan is a voluntary tax-advantaged governmental 457(b) plan that allows you to save a portion of your salary now. Benefits of a SEP-IRA.The City of Los Angeles Deferred Compensation Plan is a supplementary retirement savings plan. It is available to all full-time employees. Owners of small businesses normally do not use a formal deferred compensation plan or formal deferral of "declared" salary.