As a measure of its size, in a global workforce estimated about 3 billion, between 750 million and 1 billion are estimated as underemployed, largely in the informal sector and in subsistence agriculture in developing countries.
据估计全球劳动力总量约为30亿，按此衡量，估计有7.5亿至10亿人就业不足，他们主要在发展中国家的非正规部门和自然农业部门工作。