However, one major achievement of that report was to kick-start funding and other government support for academic research on immigration, and in particular the economics of immigration, that had up to then been largely absent. We now know quite a lot about the impacts of immigration on the UK economy and labour market; as my contribution to the ongoing debate, I've tried to synthesise the evidence in my written testimony to the inquiry (this also formed the basis for much of my oral evidence to the Exiting the EU Committee earlier this week). In my view, the key points are:
- immigration doesn't appear to have any negative impacts on the employment prospects of native workers (indeed, the employment rate is at historic highs). While the evidence on wage impacts is less conclusive, the emerging consensus is that recent migration has had little or no impact overall, but possibly some, small, negative impact on low-skilled workers. But other factors, positive and negative (technological change, policies on tax credits, the National Minimum Wage) were far more important.
- recent migrants, especially those from the EU, are likely to have a positive fiscal impact; however, positive net impact on public finances at the national level does not preclude significant impact on demand (and hence cost) at the local level. Broader concerns about the potential negative impacts on public services appear to be largely unsubstantiated. This does not mean, of course, that citizens do not associate their experience of deterioration in public service quality and availability resulting from other factors with immigration ; the fact that migrants' fiscal contribution could, in principle, at least provide enough funding to cover their marginal impact on demand is not much comfort in practice if those revenues are in fact being allocated elsewhere, for tax cuts or deficit reduction, as in fact has been the case
- the impact of immigration on productivity and hence (per capita) growth is methodologically harder to estimate. But there is growing empirical evidence, based on cross country data, of positive impacts from migration on productivity and per capita GDP.
I also discuss some of the common misperceptions about changes to the UK immigration system post-Brexit. Briefly, ending free movement
- might reduce migration to the tens of thousands, especially if accompanied by a much weaker labour market;
- doesn't in itself mean a "hard border" between Northern and Southern Ireland;
- will reduce high skilled as well as low skilled immigration;
- will involve considerably greater burdens on business, as "immigration control" is about workplaces much more than borders;
- and is likely to reduce GDP, GDP per capita/living standards, and worsen the UK's fiscal position.
A useful "public debate" might begin with this evidence base and move on from there. We can but hope. My full written testimony, with references, is here.