Here, Jane Wills argues that more needs to be done if the forms, structures and strategies of trade unionism are to measure up to the changing contours and complexities of capitalist society and the needs of workers in the 21st century. Highlighting some of the lessons tobe learned from contemporary organizing campaigns, Wills argues that unions have much to gain from building new networks. She argues that workplace and trade union organization needs to be sustained and supplemented through connections to other trade unionists and allies in the locality and further afield. By building networks around a positive agenda for change, unions can reach out and appeal to a new generation of workers.