Deferred compensation is only available to employees of public entities, senior management, and other highly compensated employees of companies. Although DC isn't restricted to public companies, there must be a serious risk that a key employee could leave for a competitor and deferred comp is a "sweetener" to try to entice them to stay. If a company is closely held (i.e. owned by a family, or a small group of related people), the IRS will look much more closely at the potential risk to the company. A top producing salesman for a pharmaceutical company could easily find work at a number of good competitors. A parent who jointly owns a business with their children is highly unlikely to leave to go to a competitor. There must be a "substantial risk of forfeiture," or a strong possibility that the employee might leave, for the plan to be tax-deferred. Among other things, the IRS may want to see an independent (unrelated) Board of Directors' evaluation of the arrangement.