Reality
Robert Skidelsky’s
recent piece
applies a textbook model to the question of immigration, which
implies real wages do fall for some time. The story goes like this.
There is sudden increase in labour supply because of a wave of
immigration. Immigrants compete for jobs, which forces down real
wages, encouraging firms to switch to more labour intensive forms of
production (automatic car wash to hand car wash), which reduces
labour productivity. However as firms respond to higher profitability
and invest, everything including real wages and productivity goes
back to where it was, the only difference being that the economy is
now larger. So immigration leads to lower real wages for as long as
it takes firms to invest.
Did the large
increase in EU immigration that started in 2004 have this effect?
There is no noticeable change in the rate of increase
in nominal or real aggregate wages until after September 2007, which
was when the Northern Rock crisis happened. Everything from 2008
onwards is dominated by the recession. But we have emerged from the
recession with an economy with low productivity and low real wages,
and as yet firms are not investing. Is this the model working, and
has the second stage involving more investment somehow stalled for
some reason? Do we need to cut immigration so we can have increasing
real wages again?
There are many
problems with this textbook model. First, there was a large increase
in work related immigration
from non-EU sources in the second half of the 1990s, but no
associated decline in real wage growth. Second, the model treats
immigration as an exogenous shock, by which I mean immigrants just
turn up and start competing for jobs. If that was the case, we would
expect to see a temporary increase in unemployment associated with
immigration inflows. You do not see that in the late 1990s, or
immediately after the start of EU migration in 2004. And third,
econometric evidence suggests
immigration has no noticeable impact on real wages (see also here. Results are similar in the US).
There is a simple
explanation for all these difficulties: we are using the wrong model.
An alternative model is one where firms find it advantageous to
produce in the UK, but have problems getting workers, a problem that
is solved by recruiting from overseas. It is very telling that under
Theresa May the Home Office commissioned
many studies designed to show how immigration was holding down real
wages, and all were suppressed because they could find no evidence.
In this production led model, there is no reason for real wages to
fall. The additional employment, investment and output go hand in
hand.
What about the
experience of low real wages after the Global Financial Crisis (GFC)?
The first point to make is that there is nothing about real wages
that a combination
of productivity growth, higher indirect taxes (in 2011) and exchange
rate depreciations cannot explain. We have not seen a significant
shift in the distribution of income towards profits. So any
immigration effect would have to come through via lower productivity.
As I explained here,
you can tell a story where poor UK productivity performance since the
GFC is the result of (a) a global productivity slowdown (b) poor UK
investment in R&D and new technology (c) unexpected negative
shocks: first the recession, then the lack of recovery (austerity)
and finally Brexit.
I would say at the
moment the evidence strongly suggests that real wages are not
noticeably reduced as a result of immigration, but I remain open to
seeing contrary evidence. We should also note the undisputed fact
that immigration provides more resources to the public sector, so
workers are better off via this route. But if this is the case, why
on earth do the public believe the opposite so strongly?
Perceptions
To many, in all
social classes, it is obvious that immigration reduces real wages.
The logic appears watertight. If more people with skill X come into
an area, that reduces what the existing workers with skill X can
charge. For the self-employed plumber, it means more competition for
a fixed number of plumbing jobs, so quotes for any job will have to
fall. For workers being paid a wage, it means they can be more easily
replaced if they or their union asks for a higher wages.
The same thing
happens in reverse when people point to Brexit leading to shortages
in labour in some sectors because immigrants are no longer coming.
Are, they say, that will raise wages in that sector, which is bound
to make the remaining workers in that sector better off.
Telling people that
econometric evidence suggests that there is no evidence that
immigration lowers real wages cuts little ice on its own, because the
logic above seems so clear. There is also no point in telling them
that immigrants will increase demand, because it is obvious that
immigrant plumbers will do their own plumbing, or immigrant workers
producing X will demand far less X than they produce.
The mistake people
are making is right at the beginning of this thought experiment. By
talking about real wages, people immediately think about themselves
as workers. As a result, they imagine a world where there are more
immigrants doing the kind of work they do. And, understandably, they
keep everything else constant. But immigration controls are never
about one group of workers, or the immigrants that have just
appeared in the neighbourhood. They are about workers across the
economy, influencing not just their nominal wage but the overall level of demand in the economy.
How do we get over
the failure to generalise? One way is to ask people to imagine the
opposite of most people’s implicit thought experiment. Ask what
would happen if there was more immigration in every trade except
their own. They should realise that immigrants would require the
services that this person provides, so the demand for their trade
would increase, allowing them to increase their quotes and raise
their standard of living.
Another mistake some
people make is to assume that because many EU immigrants are from
poorer East European countries, and immigration happens because of
differences in standards of living, we have to get some kind of
equalisation of living standards as a result of immigration. To see
why this is the wrong way of thinking about it, imagine if workers
were forced to move the other way, from rich to poor countries. Would
this raise real wages in poor countries? Of course not: they would be
paid the same as domestic workers producing the goods the poor
country does.
A far better way of
thinking about EU immigration is that it is allowing production in
the UK to happen which would otherwise go abroad. Of course there may
be a small number of cases where overseas workers are exploited
by restricting their ability to leave their employment, but domestic
laws and resources should exist to stop that happening.
One way proponents
of less immigration play on these misleading perceptions is to talk
about just controlling unskilled immigration. That is clever, because
it diverts people away from thinking in terms of a labour shortage
model. The best response to that is to suggest
various occupations
that are not classed as skilled, and ask people whether they really
want less care workers or nurses and so on.
But what if people
still feel that immigration must reduce wages in some way. Perhaps
just the possibility of potential immigration restrains workers for
asking for pay increases. The final mistake that people make so often
is to assume that lower nominal wages means lower real wages. For
that to happen prices have to be unresponsive to lower wages. And
that in turn would mean the share of profits in national income would
have steadily risen since we had large migrant inflows, which it has
not. The main determinate of real wage growth in the UK has and
always will be productivity growth.
Falling nominal wage
growth would still have an important effect, however. It would keep
inflation low, which would allow policymakers to let unemployment
fall relative to previous trends while keeping inflation on target
(it would allow the NAIRU to fall). And that has to be a good thing.
Implications
Although the
evidence overwhelmingly suggests that immigration does not reduce
real wages, it is fairly easy to see why people would think
otherwise. That contrast is ripe for exploitation. How it was
exploited, and how it is turned a previously outward looking,
tolerant nation into one that tries
to deport someone who have legally lived here for over 50 years, will
be the subject of a second post.