High Quality Content by WIKIPEDIA articles! The 2009 Royal Mail industrial disputes is an industrial dispute in the United Kingdom involving Royal Mail and members of the Communication Workers Union (CWU), which began in the summer of 2009. It was the country`s first industrial action involving postal workers for two years and came about after the Communication Workers Union accused Royal Mail of refusing to enter into dialogue regarding how the implementation of modernisation plans would affect the job security of postal workers.