P45

In the United Kingdom, and formerly in Ireland, a P45 is the reference code of a document titled Details of employee leaving work. The term is used in British and Irish slang as a metonym for termination of employment. The equivalent slang term in the United States is "pink slip". A P45 is issued by the employer when an employee leaves work. A P45 is also issued by a pension provider when one claims their pension savings held with the pension provider. From Wikipedia