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. Federal ID's may include one of the following: Personal Identity Verification (PIV) card, Personal Identity Verification-Interoperable (PIV-I) card, a Local-Based Physical Access Card issued by CMS, or a Local-Based Physical Access Card issued by another Federal agency and approved by CMS.