In reality, migrant workers are often faced with the problem of insufficient evidence and difficult to obtain evidence when safeguarding their rights. Statistics of cases heard by a court in city B show that about 80% of the cases in which migrant workers claim wages are due to migrant workers' lack of relevant evidence. Although labor contracts, wage cards, wage slips, bank transfer records, attendance sheets, work permits and other materials can be used as evidence that migrant workers are owed wages, but many migrant workers work with contractors only pay in cash, but there is no evidence. Coupled with the awareness that some migrant workers are lack of evidence, it may also lead to insufficient evidence to protect their rights after being owed wages.
Use laws and regulations to solve the problem of insufficient evidence after migrant workers are being owed wages is most likely to be described in this passage next.