Article 321. Termination by employer. — An employer may terminate an employment for any of the following just causes:

1. Serious misconduct or willful disobedience by the employee of the lawful orders of his employer or representative in connection with his work;

2. Gross and habitual neglect by the employee of his duties;

3. Fraud or willful breach by the employee of the trust reposed in him by his employer or duly authorized representative;

4. Commission of a crime or offense by the employee against the person of his employer or any immediate member of his family or his duly authorized representative; and

5. Other causes analogous to the foregoing.