These images from our archives show workers on the picket line across the decades.
1. Rail workers
Pickets at the Tinsley Marshalling Yards during the rail strike in the 1980s Photo: Sheffield Newspapers
2. NHS
NHS workers on strike in April 1982 Photo: Sheffield Newspapers
3. Miners
The NUM delegates meeting at the City Memorial Hall, Sheffield, is lobbied by striking miners in April 1984 Photo: Sheffield Newspapers
4. Bakers
Members of staff at Bilton's Bakery, Leigh Street, Attercliffe who are baking bread continually to stock up ready for the bakers strike. Left to right Jeffrey Bailey, Neil Bilton, Denise Tomlinson, Philip Bilton, November 1978 Photo: Sheffield Newspaperrs