McDonald’s workers in 19 US cities filed complaints over burns from grease, a lack of protective equipment and other workplace hazards, according to labour organisers. This is the latest move in a campaign to win pay of $US15 ($A19.70) an hour and unionisation for fast food workers by publicly pressuring McDonald’s. The push began more than two years ago and is being spearheaded by the Service Employees International Union. The burns and other hazards were detailed in complaints anno