Easing labour rules will boost Asean integration 

Intra-regional migration in Asean increased significantly between 1995 and 2015, turning Malaysia, Singapore, and Thailand into regional migration hubs with 6.5 million migrants – 96 per cent of the total number of migrant workers in Asean, according to the report, entitled Migrating to Opportunity.
Approximately US$62 billion in remittances were sent to Asean countries in 2015. Remittances account for 10 per cent of GDP in the Philippines, 7 per cent in Vietnam, 5 per cent in Myanmar, and 3 per cent in Cambodia.
Low-skilled, and often undocumented, Asean migrants move in search of economic opportunity, mainly in the construction, plantation, and domestic services sectors. Higher-salary jobs are available, yet workers are not always able to take advantage of these opportunities. The Asean Economic Community has taken steps to facilitate mobility, but these regulations only cover certain skilled professions – doctors, dentists, nurses, engineers, architects, accountants, and tourism professionals – or just 5 per cent of jobs in the region.
“With the right policy choices, sending countries can reap the economic benefits of out-migration while protecting their citizens who choose to migrate for work. In receiving countries, foreign workers can fill labour shortages and promote sustained economic growth, if migration policies are aligned with their economic needs. Inappropriate policies and ineffective institutions mean that the region is missing opportunities to gain fully from migration,” said Sudhir Shetty, World Bank Chief Economist for the East Asia and Pacific region.
Overall, migration procedures across Asean remain restrictive. Barriers such as costly and lengthy recruitment processes, restrictive quotas on the number of foreign workers allowed in a country, and rigid employment policies constrain workers' employment options and impact their welfare. These restrictive policies are partly influenced by the perception that an influx of migrants would have negative impacts on receiving economies. 

Evidence to the contrary 
However, there is evidence to the contrary. In Malaysia, simulations find that a 10 per cent net increase in low-skilled immigrant workers increases real GDP by 1.1 per cent. In Thailand, recent analysis finds that, without migrants in the labour force, GDP would fall by 0.75 per cent.
"No matter where workers wish to migrate in Asean, they face mobility costs several times the annual average wage. Improvements in the migration process can ease these costs on prospective migrants, and help countries respond better to their labour market needs,” said World Bank Economist for the Social Protection and Jobs Global Practice Mauro Testaverde, the lead author of the report.
The impact of labour mobility on the region's economies can be significant, as migration could provide individuals from lower-income countries with the opportunity to increase their incomes. The report estimates that reducing barriers to mobility would improve workers' welfare – by 14 per cent if only targeting high-skilled workers, and by 29 percent if including all workers.
A range of policies can be implemented to enhance workers' mobility. More oversight of recruitment agencies is needed across the region. 
The highly-developed support system for migrant labour in the Philippines can serve as a model for other countries. Indonesia could improve coordination among relevant agencies and streamline procedures. Vietnam can benefit from a national migration strategy to guide reforms. Outmigration can be costly, particularly in lower-income countries such as Cambodia, Laos, and Myanmar, where simplifying formal processes could help reduce costs.
Receiving countries can also introduce measures to maximise the benefits from labour mobility. Malaysia could adjust its migration policies to the country's economic needs, including by revising its current levy system and by deepening coordination with sending countries. 
Thailand may benefit from formalising undocumented migrants and making entry procedures less costly. While Singapore has developed a highly sophisticated and well-functioning migration system, attention should continue to be paid to the welfare of migrant workers.