No public employee or former public employee having official responsibility for procurement transactions shall accept employment with any bidder, offeror or contractor with whom the employee or former employee dealt in an official capacity concerning procurement transactions for a period of one year from the cessation of employment by the public body unless the employee or former employee provides written notification to the public body, or a public official if designated by the public body, or both, prior to commencement of employment by that bidder, offeror or contractor.