Strike, against the results of a reorganization - 1995Strike, state regulations regarding labour conditions - 1982Strike, wage raise - 1991Strike, wage demands excluding wage raise - 1973Strike, against the results of a reorganization - 1990Strike, against the results of a reorganization - 1993Strike, to gain recognition of a union - 1994Strike, wage raise - 2005Strike, against a worsening of the pension scheme - 2004petition, against the speed up of work - 2007Strike, wage raise - 2015Strike, wage raise - 2018