Del. Code tit. 19 § 733
Nothing in this subchapter shall be construed as a requirement that an employee be permitted to remove the employee's own personnel file, any part thereof or a copy of the contents of such file from the place of the employer's premises where it is made available for inspection. The taking of notes by employees is permitted. The employer shall retain the right to protect the employer's files from loss, damage or alteration to insure the integrity of the files. The employer may require inspection of the personnel file in the presence of a designated official. The employer must allow sufficient inspection time, commensurate with the volume content of the file. Except for reasonable cause the employer may limit inspection to once every calendar year.
19 Del. C. § 733