 The same highly compensated limit ($115,000 a year for the preceding year of 2014 and $120,000 for the preceding year of 2015) in place for 401(k) discrimination testing would likely be acceptable, as would restricting the plan to some class of employees such as directors or officers.Because of this limitation to higher-compensation employees, 457(b) plans are occasionally referred to as "top hat" plans.IRS code section 457(f) allows for nongovernmental, nonprofit organizations to set up a plan that can be tax deferred and exceed the normal defined contribution employee deferral limit.