Summarize these articles. (200-250 words per article).

Brun, J-P., & Martel, J. (2005). Three Levels of Action to prevent work-related mental health problems. Université Laval, Québec: Chair in Occupational Health and Safety Management.

Luijten, N. (2010). When do the advantages of preventive healthcare overcome the disadvantages? Retrieved from http://arno.uvt.nl/show.cgi?fid=121670