The main reasons are poorer harvests, the falling price of milk and the saturation of the pork market. The average fall in earnings per job is estimated at 1.1% as the number of persons employed in Swiss agriculture continues to decline. These findings are based on the economic accounts for agriculture compiled by the Federal Statistical Office (FSO).
http://www.bfs.admin.ch/bfs/portal/en/index/news/medienmitteilungen.Document.136669.pdf