(Seattle, WA)  --  Outdoors supply retailer REI says it's raising wages for employees in certain cities beginning next month.  The company says employees in Portland, Seattle, San Francisco, Boston, Chicago, Denver, and Washington, DC will see increases beginning August 21st, as workers raise concerns about wage and scheduling issues.  REI says employees at 37 stores will see their base wages rise from five to 15 percent, in cities where the cost of living has been rising the most.