Before Jim claims there is no racism or prejudice in Ireland again, have a look at the comments page here. I selected this one as an example:

"Saw a few Muslims wearing Burkas today. Scary stuff"

https://www.thejournal.ie/ireland-refugees-2-2982893-Sep2016/

The Bank of England did a detailed survey using statistical measures on the effect of immigration on wages and found that only in certain areas of work was there a negative outcome, something like 1% per 10% of immigrant workers in unskilled/semi-skilled areas. They worked on a supply and demand model.

However, arrangements have already been made to allow temporary immigration in some less popular areas eg seasonal farming work. With a Tory government it would not be reasonable to expect wages to go up after Brexit. In fact if you include holiday pay and other things, one of their big reasons for coming out is less regulation.

Take the care secton, where there is a lot of use of immigrant workers, low pay poor conditions and poor services are well rehearsed features of the system, but I see no prospect of these improving as nobody seems able to pay for it.