Duly pay and discharge or cause to be paid and discharged, when due, all taxes, assessments and other charges of Government Authorities imposed upon Borrower, the Borrower Subsidiaries and their respective properties, or any part thereof or upon the income or profits therefrom, as well as all claims for labor, materials or supplies which if unpaid might by law become a lien or charge upon any of their respective properties, except such of the foregoing as are being diligently contested in good faith and reserved against on the respective balance sheets, if and to the extent required under GAAP, and by appropriate proceedings. If the Borrower or any Borrower Subsidiary receives a notice of assessment and has not reserved against it, the Borrower shall promptly give notice to the Lender of receipt thereof.