According to the Arkansas General Records Retention Schedule - 3 years from the date position is filled or until final disposition of the charge or action whichever is greater.

GS 04012
Recruitment, Hiring, Interview and Selection Records
Documentation of recruitment, selection, hire, and promotion of employees. Includes position descriptions, job announcements and advertisements, selection criteria, evaluations, rankings, and employment applications of successful and unsuccessful applicants.
3 years from date position is filled or until final disposition of the charge or
action, whichever is greater. (see U.S. Code 29 C.F.R. § 1602.31)