Henry's Boss,Jacob,tells Him That Because He Has Been Such a Valuable

Essay

Henry's boss,Jacob,tells him that because he has been such a valuable employee,he will receive an extra week of vacation.When Henry decides to schedule the vacation,he reminds Jacob of his statement.Jacob says that he has changed his mind and that he really cannot afford to let Henry off.Henry says that Jacob has breached the contract he had with Jacob for an extra vacation week.Assuming injustice cannot be established,who is right and why regarding whether a valid contract for an extra week off existed?