(1) The Subcontractor agrees that all the Works (defined below) done under this Agreement shall be accomplished entirely by his own resources and responsibility and neither the whole nor any part of the Works shall be assigned or subcontracted without the prior written approval of the Contractor. Nothing in this article shall create any contractual relation whatsoever between any subcontractor employed by the Subcontractor and the Contractor other than those expressed hereunder or release the Subcontractor from any of his obligations and liabilities under this Agreement.