Derry trade unionists invite public to week-long programme of events ahead of International Worker's Day A flag which appeared in Derry on International Worker's Day last year. Reporter: '); '); Trade Unionists will hold a programme of events throughout next week in the lead-up to International Worker's Day on May 1. Chair of Derry Trades Union Council, Niall McCarroll, says: "In solidarity with each other and in our hearts we continue to shape the people’s declaration. "Styling our thoughts and actions in a way in which we begin to awaken a new mood, one which delivers equality, justice, tranquillity and spiritual peace.