Health workers are all people whose main activities are aimed at enhancing health. They include the people who provide health services -- such as doctors, nurses, pharmacists, laboratory technicians -- and management and support workers such as financial officers, cooks, drivers and cleaners. Worldwide, there are 59.8 million health workers. About two-thirds of them (39.5 million) provide health services; the other one-third (19.8 million) are management and support workers. Without them, prevention and treatment of disease and advances in health care cannot reach those in need.
Workers tend to go where the working conditions are best. Income is an important motivation for migration, but not the only one. Other reasons include better working conditions, more job satisfaction, career opportunities and the quality of management and governance. Political instability, war, and the threat of violence in the workplace also are strong drivers in many countries.
Migration is often stepwise. People sometimes move from the poorest regions to richer cities within a country and then to high-income countries. In most countries, there is also movement from the public to the private sector, particularly if there are considerable differences in income levels.
Globalization certainly has helped to drive migration abroad. At the same time, demand for health workers has increased in high-income countries because wealthy countries are not producing enough health workers locally and their existing workforce is ageing; yet there is a growing need for health care because of the ageing of populations and the rise of chronic illnesses like diabetes and heart disease. Another stimulus to migration is the growth of professional recruitment agencies.
In a number of middle-income countries with good medical education systems--such as Fiji, Jamaica, Mauritius and the Philippines--a significant proportion of students, especially in nursing school, enter their education with the intention of migrating, usually in search of a good income. Some countries, notably the Philippines, are seeking to capitalize on the demand for imported health workers by deliberately producing graduates for international export.
The movement of health workers abroad has positive features. Each year, migration generates billions of dollars in remittances (the money sent back to home countries by migrants) to low-income countries and has therefore been associated with a decline in poverty. Health workers also may return, bringing significant skills and expertise back to their home countries.
Nonetheless, when significant numbers of doctors and nurses leave, the countries that financed their education lose a return on their investment and become unwilling donors to the wealthy countries to which their health personnel have migrated.
Financial loss is not the most damaging outcome, however. When a country has a fragile health system, the loss of its workforce can bring the whole system close to collapse, with the consequences measured in lives lost. In these circumstances, the calculus of international migration shifts from brain drain/gain to "fatal flows."
Health systems in a number of industrialized countries depend heavily on doctors and nurses who have been trained abroad. English-speaking countries draw the lion's share of health workers from overseas. In Canada, New Zealand, the United Kingdom and the United States, a quarter or more of all physicians have been imported from other countries.
On average one in four doctors and one nurse in 20 trained in Africa is working in OECD countries. Some countries have been hit harder than others. For example, 29% of Ghana’s physicians are working abroad, as are 34% of Zimbabwean nurses.
Sources: US Department of Health; The World Health Organization
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