An agreement governing the temporary transfer of an employee from one organisation to another for a period, usually to carry out a particular project. The agreement will set out details of the relationship between the two organisations and the employee, usually making clear that the employee remains employed by the first organisation that will continue to pay their salary and make decisions about, for example, disciplinary matters. In practice day-to-day control may transfer to the organisation to which the employee has been seconded.
Practical Law Dictionary. Glossary of UK, US and international legal terms. www.practicallaw.com. 2010.