So unlikely for the carehome (a lot are privately owned and aiming to make a profit) to want to asorb the cost themselves. The councill will not be intrested as not enough of those cared for are ethnic minorities, ayslum seekers etc.
Remeber the non eu staff may also be say from african countries and india. We have two residental centres a street away from us and i see the 15-20 plus staff on each shift 50% who could possibly be non eu as well as phill so it may not just be the phill workers that the increase will cover.