Mental qualifications include reading at a level sufficient to understand memorandums, etc., writing in a clear, concise, and legible manner in order to compose various forms, applying mathematical functions in order to assist customers, learning and understanding AS400 computer system to perform various functions. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor's legal duty to furnish information.