(Refiles to correct dateline)
Sept 7 (Reuters) - Canada's main stock index fell at open on Friday after domestic data showed a surprise fall in jobs in August and as trade and tariff worries continued to weigh.
* At 9:30 a.m. ET (13:30 GMT), the Toronto Stock Exchange's S&P/TSX composite index was down 72 points, or 0.45 percent, at 16,028.94. (Reporting by Medha Singh in Bengaluru; Editing by Shounak Dasgupta)