business law question

Carlson Mamet interviewed for a position with KAC, Inc.  During the interviews, Mamet questioned the permanency of the job and was told that “as long as employees do a commendable job, they have no fear of being laid off” and “employees are never laid off unless there is due cause.”  In March of 2004, Mamet signed a one-page employment agreement with KAC.  The first paragraph provided that KAC would employ Mamet “for a length of time determined by the will of KAC and Mamet.”  In June 2008, KAC began terminating many employees.  On March 8, 2009, Mamet was told he was terminated as part of the staff reduction. By June 2010, KAC had laid off about 9,000 employees.  Mamet sued KAC for breach of the agreement to provide permanent employment to him.  Will Mamet succeed in proving that KAC breached their agreement with him?