In the 1960s, the modelling world began to establish modelling agencies. Throughout Europe, secretarial services acted as models' agents charging them weekly rates for their messages and bookings. For the most part, models were responsible for their own billing. In Germany, agents were not allowed to work for a percentage of a person's earnings, so referred to themselves as secretaries. With the exception of a few models travelling to Paris or New York, travelling was relatively unheard of for a model. Most models only worked in one market due to different labor laws governing modelling in various countries. In the 1960s, Italy had many fashion houses and fashion magazines but was in dire need of models. Italian agencies would often coerce models to return to Italy without work visas by withholding their pay. They would also pay their models in cash, which models would have to hide from customs agents. It was not uncommon for models staying in hotels such as La Louisiana in Paris or the Arena in Milan to have their hotel rooms raided by the police looking for their work visas. It was rumoured that competing agencies were behind the raids. This led many agencies to form worldwide chains; for example, the Marilyn Agency has branches in Paris and New York.