Construction workers who were charged after they walked off the job to attend a rally at the site of the Perth Children's Hospital contravened the Fair Work Act by their actions, the Federal Court has ruled.

Construction Forestry Mining and Energy Union officials addressed the rally on July 18, 2013 about wages, penalty rates and safety in relation to the project’s head contractor John Holland. While the director of the Fair Work Building Industry Inspectorate initially targeted 101 workers, proceedings against 35 were discontinued. Justice Michael…