Consequences do exist, although it's still very minimal. This may prompt Sony to do something as significant as Apple's move though and actively audit the companies they work with -
In one case, Apple terminated its relationship with a
component maker after discovering 74 cases in which
underage workers were being employed. Apple also found
that an employment agency had forged documents to allow
children to work illegally at the supplier.
Apple reported both the supplier and the employment
agency to the local authorities, the company said in its
latest annual report on the conditions in its supply chain.