* Union says 500 warehouse workers shut out
* Sears has stores across Canada
TORONTO, April 12 Sears Canada (SCC.TO), a leading national retailer, has locked about 500 workers out of a warehouse in Vaughan, Ontario, north of Toronto, following a bargaining deadlock over compensation, the union said on Monday.
Staff representative Terry Bea, of the United Steelworkers union, said in a written statement that Sears locked employees out of their jobs after the company refused to extend negotiations deadlocked over issues of compensation and working conditions.
The company was unavailable for immediate comment.
"Throughout negotiations Sears refused to move from their original position of roll-backs to pensions, healthcare benefits, vacation entitlement and other standard provisions," said Bea, who was not immediately available for further comment.
Toronto-based Sears Canada is a unit of Sears Holdings Corp (SHLD.O) of the United States and describes itself as a multichannel retailer with a network of 197 corporate stores and 204 dealer stores.
Sears Canada shares edged up 0.48 percent on Monday to C$29.20 in Toronto.
($1=$1.00 Canadian) (Reporting by Pav Jordan; Editing by Frank McGurty)