Economists are perplexed to find that today, in a first in any postwar
recession, productivity is not recovering
British economists are tearing their hair out over the so-called ‘productivity puzzle’ - the fact that, for the first time in any postwar recession, productivity in Britain has not recovered reasonably quickly after the initial downturn. But it isn’t a puzzle at all, and in truth points to deep structural problems in the British economy, argues Phil Mullan in this important new essay
by Phil Mullan
The productivity puzzle
Productivity
growth is the best guide to a country’s future prosperity. As a measure of
economic output relative to employed labour time, productivity gives an
indication of how much wealth can be created for society to live on.
Productivity’s capacity to grow, therefore, underpins durably improving living
standards. In Britain especially, though not uniquely within Europe,
productivity growth since the financial crisis of 2008 has been extremely weak
– in fact, in Britain’s case, it has remained a couple of per cent below its
pre-recession peak.
This has caught
many economists by surprise, prompting a significant amount of debate over why
this has happened and how long it might endure. While the initial fall of
productivity during the recession was in line with everyone’s expectations,
there hasn’t been a subsequent recovery in productivity. Instead, productivity
has remained low and pretty static. This has become known as the British
productivity puzzle (1).
It is perceived as
a ‘puzzle’ because normally after a recession, productivity recovers reasonably
quickly. Economists traditionally attribute recovery to ‘cyclical’ reasons.
Another way of viewing the ‘cyclical’ behaviour of productivity is that it is
the statistical expression of two real-economy measures – output and
employment. These two tend to move at different speeds during the different
stages of the business cycle. Output in a recession usually declines much
faster than businesses reduce their headcount, and the measure of productivity
therefore falls: less output relative to workers.
Then, when the
recession ends and output begins to grow again, the reverse effect is supposed
to kick in: the output recovery makes better use of under-used employees before
employment picks up again, creating a cyclical boost to productivity: more
output relative to workers. This effect is reinforced as output often expands
more quickly than employers recruit.
An important point
about such ‘cyclical’ shifts is that they do not reflect the
impact of the long-term driver of productivity growth: namely, productive
capital investment. It is such investment that generates and spreads the
innovation and the advances in technology and techniques that make people at
work more productive. In contrast to ‘cyclical’ changes, we can call this type
of investment ‘structural’ in its impact on productivity.
The big problem
with the productivity puzzle discussion is that it assumes that what we are
experiencing is primarily some form of business cycle (even if some highlight
more than others its unusual and distinct origins in the West’s financial crash
from 2007). But in fact, we should be looking deeper into our economic troubles
rather than presuming that they are cyclical. Britain’s economic problems – and
those of the rest of the Western world – are structural, and this accounts for
the poor state of British productivity we see today. A long period of
underinvestment in innovation, technology, capital equipment and infrastructure
manifest themselves in low productivity. There is no ‘puzzle’ about the absence
of a productivity recovery, because there is not a high productivity level to
which the economy can recover. Structural British productivity is low.
The only ‘puzzle’ is why productivity seemed to be so strong in the pre-2008 period.



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