This excerpt taken from the PHG 6-K filed Mar 19, 2008.
Participants will be subject to Canadian income tax on reinvested dividends in the year the dividends are issued. Non-resident tax of 15% will be withheld on reinvested dividends in the year the dividends are issued. Participants will be issued the appropriate tax form on or around February 28 of the following year covering the dividend and the non-resident tax deducted. The deducted non-resident tax can normally be used as a credit against Canadian taxes owing in respect of the reinvested dividends. The tax credit may be claimed when filing the personal income tax return in April of the following year.