It shall be a breach of ethical standards for a business in which an employee has a financial interest knowingly to act as a principal, or as an agent for anyone other than the State, in connection with any:
in which the employee either participates personally and substantially through decision, approval, disapproval, recommendation, the rendering of advice, investigation, or otherwise, or which is the subject of the employee's official responsibility, where the State is a party or has a direct and substantial interest.
27 Miss. Code. R. 100-6-208