I need to develop a quantitative/qualitative research project on these topics and I would like to receive some hints about good surveys and inquiries (overcoming the traditional pictures provided by the EWCS).
If you give a glance to the Eurofound EWCO section you could find several national-level sources providing in some cases quite long time series (esp. Nordic countries and the Netherlands). See also the EWCO CAR "working conditions in the retail Sector" where I included a specific section. For any further info you could contact me (see EWCO "network of correspondents" webpage).
Good day. If by "harassment" in the workplaces you mean “workplace bullying” or “workplace mobbing”, I suggest you three papers and one book by Dr. Heinz Leymann:
-Mobbbing and Psychological Terror in the Workplaces (1990)
-The content and development of mobbing at work (1996)
-Mobbing at work and the development of post-traumatic stress disorders (1996)
-Workplace Mobbing as Psychological Terrorism: How Groups Eliminate Unwanted Members (1992/2010)
Four papers by Dr. Kenneth Westhues:
-At the Mercy of the mob (in any workplace - 2002)
-The unkindly art of mobbing (in academic workplaces - 2006)
-Ten Choices in the Study of Workplace Mobbing or Bullying (2006)
-WAMI (The Waterloo Anti-Mobbing Instruments) (2004)