I liked this quote. Sums it up nicely.
I am based in a country where I pay no social tax, no income tax but use all the social services. Although I start and finish my day and have my home in this country, I am somehow exempt from labour laws that are far more stricter than the country where my airline has their headquarters. Local airlines whose business we are now taking have much higher responsibilities towards their employees and are at a competetive disadvantage. How is this fair in a single market?