a grandfather clause
 

* 1.a written statement that protects a senior worker They can't demote him because he has a grandfather clause

English Related Words* abandonment clause

* acceleration clause

* adverbial clause

* after acquired clause

* agreed value clause

* american clause

* anchor and chain clause

* arbitration clause

* assignment clause

* at port clause

* automatic termination clause

* bailee clause

* berth clause

* blanket clause

* both to blame collision clause