Human Capital & Ageing

as part of the "Next World Program"

Harvard School of Public Health

Boston, Massachusetts

April 13-14, 2015

Organized by:

David E. Bloom, Harvard School of Public Health, USA; David Canning, Harvard School of Public Health, USA; Karen Eggleston, Stanford University, USA; Wang Feng, Fudan University, China; Hans Groth, World Demographic & Ageing Forum, Switzerland; Alfonso Sousa-Poza, University of Hohenheim, Germany; Thomas Zeltner, Special Envoy, World Health Organization, Switzerland.

Topic

One of the challenges faced by ageing societies is maintaining a workforce large enough to supply the goods and services needed by a country's entire population. In the coming decades, industrialized countries will experience a steep increase in the share of elderly persons in the population and a fall in the share of the working-age population. In some countries, the number of people aged 60-64 (many of whom are about to retire) already exceeds the number of people aged 15-19 (the cohort soon entering the labour market). There will, however, be mitigating factors that will tend to decrease the effects of declines in the working-age share of the population: (a) the burden of caring for a high number of elderly people will be offset by there being fewer children to support, and (b) the proportion of adult women who work will rise when there are fewer children to take care of. Still, if there is no change in work and retirement patterns, the ratio of older inactive persons per worker will almost double from around 38 percent in the OECD area in 2000 to just over 70 percent in 2050 (OECD, "Live Longer, Work Longer", 2006). In Europe, this ratio could rise to almost one older inactive person for every worker over the same period.

Ageing on the anticipated scale will place substantial pressure on public finances and economic growth. According to the OECD, on the basis of unchanged participation patterns and productivity growth, the growth of GDP per capita in the OECD area would decline to around 1.7 percent per year over the next three decades, as compared with about 2.4 percent per year between 1970 and 2000. These negative consequences of ageing could be possibly offset by postponement of retirement, greater immigration, faster productivity growth, or higher fertility (although the positive economic effects of higher fertility would only come several decades after an uptick in fertility rates). While these developments would all help offset the negative effects, they need to go hand-in-hand with attempts to mobilize available labour in order to sustain economic growth. One of the most significant sources of additional labour supply is older people who are currently inactive. Indeed, as labour markets tighten, companies will soon have little choice but to be more welcoming of older employees. Prompt action to harness – and enhance – the contributions of older workers could become a key competitive advantage.

The objective of this workshop would be to discuss one important topic related to an ageing workforce, namely human capital. How does a worker’s human capital change over the life course and what role does the health and skill status of workers play? The answer to these questions is of great importance, not only for adequate human resource policies, but also for macroeconomic policies, especially those associated with retirement and economic growth. Despite the importance of this issue, this question is not easily answered.

The workshop will bring together researchers to present recent research on ageing and human capital. Research questions and topics that could be dealt with include:

• Human capital, economic growth, and the demographic dividend.
• Firm-level experience in promoting human capital among older workers.
• Evaluation of policies aimed at enhancing the quantity, quality, and value of older workers’ human capital.
• The relationship between human capital and productivity.
• Training and wages of older workers.
• Technological change, knowledge replenishment, and productivity. 

Submission for the Workshop

Interested authors are invited to submit a 1-page abstract by the 30th of September 2014 to David E. Bloom (dbloom@hsph.harvard.edu) and Alfonso Sousa-Poza (Alfonso.sousa-poza@uni-hohenheim.de). The authors of accepted abstracts will be notified by the end of October and completed draft papers will then be expected by the 28th of February 2015.

Economy class travel and accommodation costs for one author of each accepted paper will be covered by the organisers.

A selection of the papers presented at the workshop will (assuming successful completion of the review process) be published in a special issue of the Journal of the Economics of Ageing.

Submission for the Special Issue

Interested authors (also those not attending the workshop) are invited to submit papers for the special issue in the Journal of the Economics of Ageing by the 31st of May 2015. Submissions should be made online at http://ees.elsevier.com/jeoa. Please select article type “SI Human Capital.”

About the Next World Program

The Next World Program is a joint initiative of Harvard University’s Program on the Global Demography of Aging, the WDA Forum, Stanford University’s Asia Health Policy Program, and Fudan University’s Comparative Aging Societies. These institutions will organize an annual workshop and a special issue in the Journal of the Economics of Ageing on an important economic theme related to ageing societies.

Hunger touches the lives of people throughout the world, from the affluent Bay Area to the most impoverished regions of rural Africa. Food security – the availability of plentiful, nutritious, and affordable food – is a pressing issue for rich and poor countries alike as the world population moves toward 9 billion by mid-century.

In her new book The Evolving Sphere of Food Security (Oxford University Press, August), Professor Rosamond Naylor takes a holistic approach to the question of how to feed the world. Naylor, a professor of environmental earth system science and director of the Center on Food Security and the Environment (FSE), convened 18 colleagues from across Stanford’s diverse disciplines to shed light on the interdependent issues that affect global food security.

Throughout its 14 chapters, and a foreword by former United Nations Secretary-General Kofi Annan, the book takes up two important questions: How does the challenge of achieving food security change as countries develop economically? And how do food and agriculture policies in one country affect nutrition, food access, natural resources and national security in other countries?

Collaboration across disciplines

Naylor, who edited the volume and co-authored several chapters, explained that The Evolving Sphere of Food Security is the first book of its kind to engage faculty and scholars from across Stanford’s campus on issues of global hunger.

Professor Rosamond Naylor

“This book grew out of a recognition by Stanford scholars that food security is tied to security of many other kinds,” said Naylor, who is also William Wrigley Senior Fellow at the Freeman Spogli Institute for International Studies and the Stanford Woods Institute for the Environment. “Food security has clear connections with energy, water, health, the environment and national security, and you can’t tackle just one of those pieces.”

Stanford has a long history of fostering cross-disciplinary work on global issues. It is in this spirit that the idea for the book was born, Naylor said. The book weaves together the expertise of authors from the fields of medicine, political science, engineering, law, economics and climate science.

“Stanford was the ideal place for this project. A book like this exemplifies how collaborative, interdisciplinary research can be greater than the sum of its parts,” Naylor said. “We have painted a much more inclusive picture of food security than if we had approached these questions from only one discipline.”

Rooted in field research

Another unique feature of the book is that each author’s insights are shaped by years of hands-on research and policymaking experience around the world.

Several authors, for example, have been instrumental in shaping U.S. and global food policy for decades. Walter Falcon, professor emeritus of economics and the deputy director of FSE, traces his career as an agricultural economics advisor to the Indonesian government, where he witnessed the country’s dramatic improvements in combating hunger and poverty since the 1960s.

Political science professor Stephen Stedman recounts his experience as a security policy advisor to the United Nations during the 2000s. Recognizing that food insecurity can exacerbate civil conflict, weaken governments and threaten international stability, Stedman worked to integrate food security into traditional security agendas.

Other authors have spent many years working in East Asia, Africa, South America, the Middle East and Europe. As a whole, said Naylor, the team has conducted well over a hundred years’ worth of field research all over the world.

Challenges evolve as countries develop

A recurring theme throughout the book – also reflected in its title – is the evolving nature of the food security challenges countries face as they move through stages of economic growth. At low levels of development, countries struggle to meet people’s basic needs. For example, Naylor’s chapter on health, co-authored with Eran Bendavid (medicine), Jenna Davis and Amy Pickering (civil and environmental engineering), describes a recent study showing that poor nutrition and rampant disease in rural Kenya is closely tied to contaminated, untreated drinking water. Addressing these essential health and sanitation issues is a key first step toward food security for the poorest countries.

As nations rise above the bottom rungs of development, they encounter new challenges. Scott Rozelle, director of the Rural Education Action Program, warns that middle income countries like China now face a “second food security crisis” of widespread micronutrient deficiency. Recent rapid economic and agricultural advancements have largely solved the problem of supplying sufficient calories. But this progress masks what Rozelle describes as “hidden hunger,” or a lack of vitamins and minerals that impedes kids’ school performance and could slow China’s long-term growth. Even in rich countries like the U.S., said Naylor, malnutrition can be a drag on educational and economic performance.

Developed countries face other unique tradeoffs in the use of resources for food production. In his chapter on water institutions, Buzz Thompson, professor of law and co-director of the Woods Institute, explains that conflicts over water increase between smallholder and industrial users as countries develop. Eric Lambin, professor of environmental earth system science, and Ximena Rueda, research associate in earth sciences, offer the paradox that as countries grow wealthier, changing patterns of agricultural land use may actually worsen food security by fueling the spread of obesity and diabetes.

At its core, said Naylor, The Evolving Sphere of Food Security is about more than economic and policy trends. “The book puts a human face to food security, because hunger is an intensely human experience,” she said. “This book tells an integrated story about people’s lives, and how they are shaped by resource use and the policy process around global food security.”

According to a new study co-authored by Stanford professor David Lobell, the chance of a worldwide slowdown in agricultural yield growth in the next two decades is significantly higher due to global warming.

Lobell and co-author Claudia Tebaldi, a senior researcher at the National Center for Atmospheric Research, set out to estimate the odds of a steep drop in global wheat and corn yield progress under several climate scenarios. The study, “Getting caught with our plants down: the risks of a global crop yield slowdown from climate trends in the next two decades” appeared in Environmental Research Letters.

Lobell said he was motivated to pursue the study based on questions posed by stakeholders and decision makers in governments and the private sector.

“I’m often asked whether climate change will threaten food supply, as if it’s a simple yes or no answer,” Lobell said. “The truth is that over a 10 or 20 year period, it depends largely on how fast the Earth warms, and we can’t predict that very precisely. So the best we can do is try to determine the odds.”

Lobell and Tebaldi calculated the chance of a 10 percent global yield loss from climate change over the next 20 years, which would represent a severe impact on food supply, enough to roughly halve the rate of yield growth.

The short time frame of the study was deliberate, Lobell said. “Many studies have looked at climate and agriculture trends over the coming 50 or 100 years. But the next two decades are when most of the global population growth, and dietary shifts driven by a growing middle class, will occur. The growth rate of food demand will be higher during this time than at any other time in the next century.”

Without human-induced global warming – in other words, in a world with only natural climate variability – the likelihood of a yield drop that large is only 1 in 200. But when the team accounted for global warming, they saw the odds jump to 1 in 10 for corn and 1 in 20 for wheat. “In this study, we did not try to estimate the most likely impacts of climate change on crops,” Lobell said. “Rather, we estimated the likelihood of a really major impact, not because we want to scare people, but because there are many people who want to be prepared for all contingencies.”

“The point of the paper is to move from hand-waving about scenarios of what could go wrong, to specific and transparent estimates of the actual odds,” Lobell said. “The odds are not very high, but they are significant and a lot bigger than they used to be. The people asking these questions are accustomed to planning for scenarios with much less than a 10 percent chance of happening, so it will be interesting to see whether this study has any effect on how they operate.”

Lobell adds that organizations working toward global food security, and related issues such as conflict prevention, are most interested in the next 20 years because their decisions rarely consider the more distant future.  “As scientists, we might prefer to work on time scales in which the answers are clearer, but we also want to be responsive to the actual concerns and questions that decision makers have.”

Lobell is associate professor of Environmental Earth System Science at Stanford and associate director of the Center on Food Security and the Environment. He is also a senior fellow at the Stanford Woods Institute for the Environment and the Freeman Spogli Institute for International Studies.

Contact:

David Lobell: dlobell@stanford.edu

Laura Seaman, Communications and External Relations Manager, Center on Food Security and the Environment: lseaman@stanford.edu