Strike, against a wage cut - 1979demonstration, state regulations regarding labour conditions - 1968Lockout, workers refused to accept a wage cut - 1923Lockout, because the workers had been on strike - 1929blockade, wage raise - 2007occupation not on the worksite, - 2008Strike, other demands - 2008Strike, wage raise - 2008Strike, collective agreement demanded by the employees - 1926Strike, state regulations regarding labour conditions - 2009demonstration, wage raise - 2010Strike, primary - 2013Strike, wage raise - 2015Strike, wage raise - 2017Strike, wage raise - 2015demonstration, collective agreement demanded by the employees - 2015Strike, collective agreement demanded by the employees - 2016demonstration, - 2013Strike, unknown - 2018Strike, - 2018work-to-rule, against understaffed work - 2018Strike, wage raise - 2018Strike, other demands - 1983Strike, wage raise - 1955blockade, state regulations regarding labour conditions - 2005Strike, state regulations regarding labour conditions - 2003Strike, against the sacking or punishment of a colleague - 2019Strike, against a worsening of the pension scheme - 2019Strike, wage raise - 2019Strike, wage raise - 1921