The same company pays for all of the benefits of the plan, and does not pool benefits among employees of other companies. Irrevocable cash contributions are made on behalf of the employees on a periodic basis. The assets in these plans are usually held by an independent trustee, and are exempt from seizure by any creditors the company may have. The Internal Revenue Service (IRS) issued revised guidance in October 2007 that excluded some benefits for plans that were funded with permanent insurance. This plan can also keep contributions made for key employees separate from those of rank-and-file employees.