The impending walk-out of 40,000 rail workers in strikes next week makes several of Sunday’s papers. The Observer says a wave of “1970s-style economic unrest is threatening to spread from the railways across the public sector” as unions representing teachers and NHS workers warn of potential industrial action over pay. The National Education Union told the paper that unless it received a pay offer much closer to inflation, it would plan to ballot its 450,000 members.