*ECB's Draghi Begins Press Conference In Frankfurt

*U.S. Labor Productivity Climbs 1.9% In Q4, Unit Labor Costs Increase 2.0%

*Canadian Building Permits Plunge 5.5% In January

ECB Sees More Delay In First Post-crisis Rate Hike, Unveils New Longterm Loans

*U.S. Initial Jobless Claims Edge Down To 223,000 In Week Ended 3/2