'The first retail worker strike against Walmart has spread from Los Angeles, where it began last week, to stores in a dozen cities, a union official said Tuesday.

Walmart workers walked off the job in Dallas, Seattle, the San Francisco Bay area, Miami, the Washington, D.C., area, Los Angeles, Sacramento, Chicago and Orlando, said Dan Schlademan, director of the United Food and Commercial Workers' Making Change At Walmart campaign. Workers also went on strike in parts of Kentucky, Missouri and Minnesota, he said.

Tuesday's walkouts included 88 workers from 28 stores -- a minuscule fraction of the 1.4 million who work at Walmart, the world's largest private employer. Until Friday, when about 60 Walmart employees walked off the job for a day in LA, no Walmart retail workers had ever gone on strike, the union said.'

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