Retirement benefit plans are arrangements whereby an entity provides benefits for its employees on or after termination of service (either in the form of an annual income or as a lump sum) when such benefits, or the employer’s contributions towards them, can be determined or estimated in advance of retirement from the provisions of a document or from the entity’s practices. (See also ‘post-employment benefit plans’.)
Retirement benefit plans are specifically discussed in IAS 26 Accounting and Reporting by Retirement Benefit Plans.
Source: Glossary of Terms of IFRSs as at 31 December 2008.