It is quite difficult in Switzerland to pursue a debtor, at least for small amounts, once s/he has left the country. The Betreibungsamt / Office des Poursuites has jurisdiction over persons domiciled in its district, and over firms with their home office there. Article 46: http://www.admin.ch/opc/fr/classifie...002/index.html
When I sued a major builder over a hidden vice in the new-build apartment I bought, I could not do so in French in the court for Crissier, their local branch. I had to go to Frauenfeld and sue in (schoolboy) German (which I did, and they admitted liability and in due course paid up).
They paid CHF 2,200. The irony is that if they had replaced the defective double gazing themselves at the time of the complaint, it would have cost them only CHF 400 in materials.
On the other hand, a Swiss judgment, by default or otherwise, so long as there was jurisdiction and proper service of process, will be enforced (with costs and interest) under the Lugano Convention throughout the EU/EEA/Switzerland and by comity in many other countries including the USA.
(I was once threatened with suit (frivolously, but that's another point, and a matter of opinion I suppose: the guy's lawyer said I had insulted his client amounting to racial discrimination) but I countered with the fact that I was not domiciled in Switzerland. I told him that a "more convenient forum" (a term of art, forum conveniens
) would be San Francisco, Calif. where his client owns a home and where I had family and a driving license -- and beyond that if his client felt insulted there was good reason for it which I then proceeded to prove. There's nothing more annoying than a bully with a lawyer, and my sport is then to run up the guy's legal bill.)