Two activist groups have filed formal complaints accusing Wal-Mart of various labor violations. The advocacy association ?Our Walmart? has presented the NLRB with a list of over 30 complaints, alleging that the company mistreated workers who expressed opposition to certain company activities. Another group, ?Warehouse Workers United,? filed a complaint with the California Division of Occupational Safety and Health accusing a warehouse that stores suitcases for the retailer of forcing employees to work under hazardous conditions. One employee reported that facility lacked fans, air conditioning, or cold water to drink. Wal-Mart has not yet responded to the complaints.
See "Two activist groups accuse Wal-Mart of unfair labor practices", Tiffany Hsu, Los Angeles Times, May 23, 2013