 Royal Decrees issued on 18 April 2017 for general public procurement, 18 June 2017 for procurement in the water, energy, transport and postal services sectors, 22 June 2017 containing new rules on the performance of public works contracts and concession contracts for public works and 25 June 2017, for the award and performance of concession contracts, have augmented the earlier laws.Article 51 of the Royal Decree of 18 April 2017 includes a "revolving door mechanism", which targets the situation where a person previously working for a contracting authority is now being employed by an economic operator involved in a public procurement procedure established by that contracting authority.In this type of situation the person would be presumed to have a conflict of interest for a two-year period following the termination of his/her employment with the contracting authority.