Each Loan Party and each of its Subsidiaries shall timely file or cause to be filed all material Tax returns required to be filed by it and shall timely pay all material Taxes due and payable by it or imposed with respect to any of its property and all other material fees or other charges imposed on it or any of its property by any Governmental Authority (other than any Taxes, fees or other charges, the amount or validity of which is being contested in good faith by appropriate proceedings and with respect to which reserves in conformity with GAAP have been provided on the books of such Loan Party). Each Loan Party and each of its Subsidiaries shall withhold all employee withholdings required to be withheld and shall make all employer contributions required to be made by it pursuant to applicable law on account of the Canada and Quebec pension plans, employment insurance and employee income taxes.