It is not obvious from theory alone whether migration will have a positive or negative impact on the wages and job prospects of existing workers in the labour market, or no effect at all. Immigration affects the number of workers in the economy, increasing ‘labour supply’. This means there are more people looking for jobs.
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By the way, you’re the one making the claim that “both are bad” - why don’t you have to show me a study or something to back up your idea?
I think people losing their jobs is bad. And again, from your own link…
The number of jobs in the UK economy is not fixed. Migrants compete with existing workers in the UK for jobs, but they also cause the number of jobs to increase
Low-wage workers are more likely to lose out from immigration, while medium and high-paid workers are more likely to gain, but the effects are small
In general, workers in low-skilled occupations face more competition from migrants because the skills needed for those jobs are easier to acquire.
From your link
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I think people losing their jobs is bad. And again, from your own link…
And so on.