Roughly 30 percent of Nepal's GDP comes in the form of remittances, money sent home by Nepalese working abroad.
Every day, around 1,000 Nepalese board flights for countries in the Gulf, North Africa and Asia; others go overland to India. They find jobs, most often, in construction or the services sector. And then, many send money home.
Ratha is the manager of the Migration and Remittances unit at the World Bank. He says remittances are crucial.
"At the very poor level," he explains, "it is really a lifeline that provides people with food, with shelter and with education and business investments."
Remittances have helped reduce Nepal's poverty rate, but there is a possible downside to so many young, able-bodied men working outside of the country. When it is time to rebuild damaged and destroyed homes and businesses, some analysts suggest Nepal may face a shortage of labor. On the other hand, money being sent home to the country will now be all that much more important.