Over many parts of the world, there is an increasing trend of rise in the percentage of casual employment.

I have heard the highest figure is in Norway, with Australia being second with 25% of the work being casual.

See, for example, an old American paper that touched on this subject, while examining the pathology of American ghettos.
http://web.archive.org/web/20031118102645/http://homepage.mac.com/paytonc/repository/ghettoes.pdf

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CategoryBigPicture, CategoryEmployment