Those that could not find formal factory work, including illegal migrants and the families of rural Thai migrants that followed their relatives to the urban centres, turned to the informal sector to provide the extra support needed for survival—under the widespread regulation imposed by the structural adjustment programs, one family member working in a factory or sweatshop made very little. Scholars argue that the economic consequences and social costs of Thailand's labour reforms in the wake of the 1997 Asian Financial Crisis fell on individuals and families rather than the state. This can be described as the "externalisation of market risk", meaning that as the country's labour market became increasingly deregulated, the burden and responsibility of providing an adequate livelihood shifted from employers and the state to the workers themselves, whose families had to find jobs in the informal sector to make up for the losses and subsidise the wages being made by their relatives in the formal sector. The weight of these economic changes hit migrants and the urban poor especially hard, and the informal sector expanded rapidly as a result.