Overseas Employment Corporation (OEC) is Pakistan's public sector channel for overseas employment that recruits workers along with private overseas employment promoters (OEPs). OEPs work with sub-agents in rural areas to recruit semi-skilled and skilled workers through personal referrals. Some workers resort to illegal migration due to high costs of legal migration or overstay their visas. Once abroad, workers sometimes sign new contracts with lower pay than promised or undergo medical tests and re-assessments of skills.