Since the International Labor Organization (ILO) presented the term of Informal Employment, many economists and sociologists have made many useful researches on Informal Employment from the social backgrounds of their own countries.

• 自国际劳工组织(ILO)明确非正规就业的提法以来，许多经济学家和社会学家从本国的社会背景出发，对非正规就业进行了有益的探索。