All other information contained in a personnel file is confidential and shall not be open for inspection and examination except to the following persons:
Notwithstanding any other provision of this Chapter, any department head may, in his discretion, inform any person or corporation of any promotion, demotion, suspension, reinstatement, transfer, separation, dismissal, employment or nonemployment of any applicant, employee or former employee employed by or assigned to his department or whose personnel file is maintained in his department and the reasons therefor and may allow the personnel file of such person or any portion thereof to be inspected and examined by any person or corporation when such department head shall determine that the release of such information or the inspection and examination of such file or portion thereof is essential to maintaining the integrity of such department or to maintaining the level or quality of services provided by such department; provided that prior to releasing such information or making such file or portion thereof available as provided herein, such department head shall prepare a memorandum setting forth the circumstances which the department head deems to require such disclosure and the information to be disclosed. The memorandum shall be retained in the files of said department head and shall be a public record.
N.C. Gen. Stat. § 126-24