A person in the employ of a private employer shall, upon request, be granted a leave of absence by his employer for the period required to perform Territorial Active Military Service. Upon his release from that service, or upon his discharge from hospitalization incident to that service, such employee shall be permitted to return to his position with such seniority, status, pay grade and vacation as he would have had if he had not been absent for such purposes. He shall report for work at the beginning of his next regularly scheduled working period after the calendar day following his release, or within a reasonable time thereafter if delayed return is due to factors beyond the employee's control. Failure to report for work at such next regularly scheduled working period shall make the employee subject to the conduct rules of the employer pertaining to explanations and discipline with respect to absence from scheduled work. If the employee is not qualified to perform the duties of his position by reason of disability sustained during Territorial Active Military Service, but is qualified to perform the duties of any other position in the employ of the employer or his successor in interest, he shall be restored by that employer or successor to such other position as will provide him like seniority, status, and pay grade, or the nearest approximation thereof consistent with the circumstances in his case.