The contractor shall not be relieved of any of its obligations under this contract by entering into subcontract of the performance of all or any part of this contract. Without prejudice to any other liability the contractor may have or any other claim the employer may have. The contractor shall be fully responsible for all acts, omissions, defaults and/or negligence of each subcontractor, its agents or employees as fully as if such acts, omission, defaults and /or negligence were those of the contractor or its agents or employees.