The Newspaper Guild of New York filed the charge with the National Labor Relations Board.
The Guild says the company instituted a Twitter policy it never negotiated with the Guild, which prohibits its employees from tweeting anything "that would damage the reputation of Reuters News or Thomson Reuters." According to PR Newswire:
[a] union activist was "reminded" of the policy after responding to a senior manager's call to "join the (Twitter) conversation on making Reuters the best place to work" with a tweet that said: "One way to make this the best place to work is to deal honestly with Guild members."Thomson Reuters disputes the Guild's illegal pay cut accusations, saying it was actually guaranteeing a minimum .5% salary hike for the Reuters News service's approximately 400 unionized journalists.