The average migrant (certainly from the A8) is more likely to have a degree than the average native worker. I wonder if the difference is that migrants also see low paid jobs as a stepping stone to something better? It's pretty well known that it's easier to find work if you're already in work. Indeed, a study recently found that it's easier to find work with a criminal record than it is if you've been unemployed for over a year.
I know from my own partner that she worked in some interesting jobs when she first came to Britain. Many of her early jobs would pay something like £15 a week, albeit with accommodation paid for (charities usually but also nannying). She'd do extra work on top of that to earn some pocket money until she learned the language enough to get into medical school. Has now been working in the NHS for half a dozen years or so.
It is anecdotal evidence for sure, but I don't think it's that uncommon, and stats do seem to suggest that many migrants enter the workforce at a lower level than their skills/experience suggest they should, but then they work their way up. It may just be the ones I know of course, which I readily accept.
I don't think I really understand the point you're trying to make. Absolutely, many migrants will see low paid jobs as a stepping stone to work.
My point was that in many communities, there are a lack of jobs. Traditionally, working class communities depended on industry for work, which paid relatively well. Since these jobs have ,diminished, since mines have closed and dock yards have dried up, the modern day equivalent are low paid call centres or supermarkets. These employ only a fraction of what industry once did.
Many companies get around paying the already insulting minimum wage by employing groups of migrant workers, to which a lower than minimum wage paying job might seem quite attractive when they pay more than your home country. Which in turn, leaves next to no jobs left for working class people in this country.
It is the fault of the companies who employ migrants at such a low cost.