Jonathan is contracted to work for a large concert hall as a "catering manager". His contract states that he is an "independent contractor", but he knows that is not the final determination on the matter. Jonathan carries out all duties himself using equipment supplied by the concert hall. Although he reports to the concert hall director, he enjoys a considerable degree of autonomy in how he organizes the catering side of the business. Jonathan is allocated a budget by the concert hall from which he is entitled to draw a regular monthly sum for himself calculated on the basis of any profits made by the catering service. Furthermore, Jonathan's contract allows him to provide catering management services to other companies subject to the approval of the concert hall director. Is Jonathan working under a contract of employment or an independent contract with the concert hall?