. >> short 10 hours a week as a cleaner in this luxemburg home illegally. an ethnic serb from kosovo, she has been in the country for three years, but she does not have a work permit. >> i feel very nervous in public. they ask to see my papers, for example on the bus, when the tickets are checked. the police checked the trains often. when i go shopping in the city, i am very tense. >> her employer also has reason to be nervous. the luxembourger is friends with her, but by employing her as a cleaning lady, she is breaking the law. alexandra says she is hardly alone. >> many people are working illegally, from cleaners in private homes to hotel and restaurant workers here in luxembourg. there -- they are a very large part of our economy and contribute to the wealth of our society here in the city. >> in a rich country like luxembourg, illegal immigrants are a cheap source of labor. paying workers the minimum wage of nearly 1900 euros a month is just too much for many, but an eu law is forcing the country to crack down on iegal wk. the government is offering a