Consider the following hypothetical case: Ms. Grace Sanchez, your client, was recently dismissed from her position as Day Manager of Helman's, a large local department store. Ms. Sanchez is sixty-four years old. She was with the company for over thirty years. She began her career at Helman's as a clerk in the jewelry department. Ms. Sanchez believes Helman's dismissed her because she is approaching retirement age and they do not want to pay her a pension.

What is the legal issue in the Sanchez case?