There are many reasons, and I can give you some examples. In these special export zones, there are some laws that are not the same; for example, the minimum wage is lower in those zones than for the country. Although recently the migrant workers were allowed to join unions, they're not allowed to form them, and there are restrictions on their freedom of association. These are laws.
In terms of working conditions, for example, there is some progress around manufacturers setting curfews. They're not really allowed to set curfews, but it still happens. There are issues about how many hours, whether overtime or extra working hours are compulsory, and things like that. That is more in the application of the manufacturers.