http://www.cbc.ca/news/canada/ottawa/story/2013/07/10/ottawa-walmart-hot-cars-vehicles-dogs-animals-worker-fired-cheney-parking-lot-customer.html?cmp=rss
Apparently you can get fired for reporting it. http://www.cbc.ca/news/canada/ottawa/wal-mart-employee-fired-after-reporting-dog-in-hot-truck-1.1347231?cmp=rss
Source: The Barrister Brief: Animal Law: What to Do If You Witness a Dog (or Other Animal) in a Hot Car