Wake Up Wal-Mart was a campaign founded by United Food and Commercial Workers Union.
The group claimed Walmart was offering its employees substandard wages and health care benefits, and called on the retailer to improve both.
Its website is no longer active and the url wakeupwalmart.com now redirects to another UFCW-funded group, Making Change At Walmart.
The group argued that Wal-Mart paid "poverty wages", relied on public health care rather than providing its employees with healthcare, and was, in general, harmful to communities.
The group said that the purpose of the new organization was to assist past and present Wal-Mart employees, but that it was not a formal labor union.