民用工程合同书(23)

12　accident of injury to workmen
　　the employer shall not be liable for or in respect of any damages or compensation payable at law in respect or in consequence of any accident or injury to any workman or other person in the employment of the contractor or any subcontractor， save and except an accident or injury resulting from any act or default of the employer， his agents， pr servants. the contractor shall indemnify and keep indemnified the employer against all suchdamages and compensation， save and except as aforesaid， and a-gainst all claims， proceedings， costs， charges and expenses what - soever in respect thereof or in relation thereto.
　　the contractor shall insure against such liability with an in- surer approved by the employer， which approval shall not be un - reasonably withheld，and shall continue such insurance during thewhole of the time that any persons are employed by him on theworks and shall， when required， produce such policy of insurance and the receipt for payment of the current premiums.provided always that， in respect of any persons employed by any subcontrac - tor， the contractor' s obligation to insure as aforesaid under this subshall be satisfied if the subcontractor shall have in - sured against the liability in respect of such persons in such manner that the employer is indemnified under the policy， but the contractor shall require， such sub - contractor to produce， when required， such policy of insurance and the receipt for the payment of the current premium.
13　remedy on contractor's failure to insure
　　if the contractor shall fail to effect and keep in force the in - surances referred to in clauses 9， 11 and 12 hereof， or any other insurance which he may be required to effect under the terms of the contract， then and in any such case the employer may effect and keep in force any such insurance and pay such premium or premiums as may be necessary for that purpose and from time to time deduct the amount so paid by the employer as aforesaid from any monies due or which may become due to the contrac - tor， or recover the same as a debt due from the contractor.