I am basing my opinion purely on personal experience.I simply abhor this nonsensical fallacy that they're all hard grafters, because they have the same lazy gets we do. I worked in Jaguar and the polish lads there did their graft and were ultra polite. Couldn't say that of the lorry drivers from all over eastern Europe, though.
In Quinn glass a load of the poles there were the most dilatory, bone-idle bleeders I've ever seen. One just used to go from one water dispenser to the next talking to anyone who was there.