I have noticed that there is a belief out in New Zealand that there is a set “lump” of jobs – and if foriegn people come in they take them, and “New Zealander’s miss out”.

Now if this matters to us this may be concerning – however, we have been talking about migrants “creating work” and saying that they do “different jobs” than the New Zealand trained workers.

The idea that there is a fixed lump of jobs does not fit this description. However, the idea has a name: The lump of labour fallacy.

The confusion stems from a fundamental misunderstanding surround what labour is. Labour is an input to production. However, as people (who we value in society) get their income by acting as an input we sometimes view work as income. From this step – we end up saying that other people are “stealing our income” by doing this work.

However, what this argument ignores is that labour is an input to production – if you bring in more people, more stuff can be produced. If the addition person is really productive (skilled labour, or domestic poorly provided unskilled labour) then when they come in to society they quickly help everyone else.

As a result, policies to kick current skilled labour out of the country will be counter-productive. Even if we didn’t care about the welfare of foreign people (which of course we do – and really should equally, but oww well) we are effectively cutting off our nose to spite our face. Keep that in mind.