Any person who is restored to a position in accordance with the provisions hereof shall be considered as having been on furlough or leave of absence during his services in the armed forces of the United States, and shall be restored without loss of seniority, and shall be entitled to participate in insurance or other benefits offered by the employer pursuant to established rules and practices relating to employees on furlough or leave of absence in effect with the employer at the time such person entered the armed forces of the United States, and shall not be discharged from such position without cause within one year after such restoration.