(Photograph) - Shop-floor art: Maria McCavana, a student at Glasgow School of Art (pictured with John McFadden, outgoing president of Unison), unveils her three-part wall-hanging, commissioned by the trade union. The commission, part of Unison's art sponsorship scheme, reflects the influence of Irish immigration on industrial life and the trade union movement. This is the only time the three wall-hangings will be exhibited together. One is to go to the Scottish Trades Union Congress offices in Glasgow, one to Unison's Belfast offices and one to the Irish Museum of Labour History in Dublin. Photograph: Gerry McCann.