Not only the cost of labour is important for firms but also the number (sufficient number of people available in case of expansion) and quality of human capital available (employees meet the necessary skills or will have to invest huge amounts for training)
Education and Training improve the quality of human capital and thus its productivity but they are also needed in cases of changes in working practices, introduction of new technology, increase range of workers' skills (flexibility/multi-skilled) -> workers feel motivated and more secure
Some businesses begin to find recruitment difficult in China due to one-child policy and due to the fact that many do not want to work for exporters that have more challenging working conditions