43 Pa. Stat. § 1323
Nothing in this act shall be construed as a requirement that an employee or the designated agent of the employee be permitted to remove his personnel file, any part thereof, or 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 an employee or the designated agent of the employee is permitted. The employer shall retain the right to protect his 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 an official designated by the employer. 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 by an employee and once every calendar year by the employee's designated agent, if any.
43 P.S. § 1323