katsuyuki shibayama 120x120by Dr Katsuyuki Shibayama, University of Kent. Discussion paper KDPE 1813, November 2018.

Non-technical summary:

After the Great Recession around 2007-8, the U.K. has experienced the slowdown of the labour productivity; known as ’productivity puzzle’. Although it is widely recognized as the stagnation of the labour productivity, not surprisingly, it coincides with the flattening of the total factor productivity (TFP). Japan also has experienced a similar but much longer and deeper phenomenon after the bubble burst at the beginning of 1990s. Interestingly, both countries have experienced the growth slowdown after some financial turmoil. This paper aims to explain these growth slowdowns quantitatively in a reasonably realistic economic growth model.

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anthony savagar 120x120by Dr Anthony Savagar, University of Kent. Discussion paper KDPE 1812, October 2018.

Non-technical summary:

A standard way to measure productivity is to take output growth and subtract input growth. Typically input growth is growth in capital and growth in labor weighted by their share in production. Whatever remains after subtracting is known as total factor productivity (TFP).

Under specific circumstances, this productivity measure also reflects underlying technology growth. This is important for economists because they struggle to measure underlying technology at an aggregate level, but it is a key variable to understand the behaviour of the economy.

However when we diverge from some basic assumptions, such as perfect competition, the TFP measure no longer reflects underlying technology. Therefore using our TFP measure to represent technology could lead to incorrect conclusions.

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jan philipp dueberby Jan-Philipp Dueber, University of Kent. Discussion paper KDPE 1811, August 2018.

Non-technical summary:

Time-varying volatility plays a crucial role in understanding business cycles in emerging market economies. There is now plentiful empirical evidence that volatility as measured by the standard deviation in macroeconomic data is time-varying and strongly countercyclical. Volatility increases during an economic recession and becomes lower during an economic boom.

In addition, we observe that standard open-economy macroeconomic models widely used for business cycle analysis fail to address the specific characteristics of many emerging market economies. In emerging market economies the net export to output ratio is typically negatively correlated with output i.e. it is countercyclical. However, standard models predict a near perfect positive correlation between the two. Besides that, emerging market economies show a higher fluctuation in consumption data than in data on output. Standard models, however, predict a higher fluctuation in output than consumption. These models are therefore overemphasizing the role of consumption smoothing.

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keynes collegeby Amrit Amirapu, University of Kent; M Niaz Asadullah, University of Malay; and Zaki Wahhaj, University of Kent. Discussion paper KDPE 1810, September 2018.

Non-technical summary:

Large-scale rural-urban migration and a concurrent shift in employment from agriculture to manufacturing are two common features of countries in the process of economic development. Most of the past theoretical and empirical work in this area has focussed exclusively on understanding the migration and work patterns of men, so that relatively little is known about the potential for and drivers of female migration in developing economies. In traditional societies, prevailing gender norms can restrict female work participation and independent (i.e. without a family) migration, which suggests that women may be more limited than men in their ability to take advantage of economic opportunities in urban non-agricultural industries. On the other hand, it is well-documented that marriage is an important vehicle for female long-distance migration in traditional patriarchal societies, which suggests that the marriage market can provide – and itself be shaped by – growing economic opportunities for women in urban areas.

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keynes collegeby Keisuke Otsu, Keio University and University of Kent; and Katsuyuki Shibayama, University of Kent. Discussion paper KDPE 1809, July 2018.

Non-technical summary:

The Japanese economy has gone through important transitions during the postwar period such as the gradual slowdown in economic growth and the steady increase in the share of people aged above 65 years old among the adult population. In this paper we construct a parsimonious neoclassical growth model to quantitatively assess the impact of population aging and various government policies on output growth in Japan over the 1975-2015 period.

We consider several interactions between government policies and population aging. First, labor income tax has been rising steadily as the social security burden of the working age population has increased. Next, population aging tends to decrease employment and increase hours worked per worker in exchange; the workweek reduction policy introduced in the late 1980s is crucial to account for the decline in hours worked per worker during this period. Finally, the composition of fiscal spending has shifted from public investment to medical expenditure as the demand for health care services has risen.

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