According to an ad (keystone source) in the tourist industry of Poland, Polish plumbers are just hot models waiting for visitors to come and visit Poland and see what the buzz is about. Unfortunately that sterotype is far from the truth. Most plumbers barely scrape by on a salary they earn but they do enjoy their work. Most earn only 1,500 to 2,500 Zlotys per month. It translates to something less than 1000 CHF a month!
Concerns according to the Swiss Info article are that polish plumbers will make their way to switzerland. According to the two plumbers interviewed, they really have no need or want to work in Switzerland. I guess time and a vote will only tell the outcome. I think the vote comes next week to vote in the new EU countries with free movement within Switzerland and the EU.