Social assistance consists mostly of cash transfers to vulnerable groups, but has been expanded to include a larger category of beneficiaries. One of the main challenges is the non-coverage of the poor who are not registered in the official poverty list. Social insurance coverage is driven largely by the compulsory or voluntary nature of the scheme. Mandatory social insurance schemes, which include maternity leave, pension, work-related injury, occupational hazards and health insurance, cover people with formal labour contracts.