Germany, the world's third-largest economy, has a long tradition as an exporter. Over the years it has also become an interesting market for investment. Regional differences influence dialects, culture, and business practices in Germany. Nevertheless, there are rules to follow, whether you are in Berlin, Frankfurt, Hamburg or Munich. Communication is relatively formal. When Germans meet on a business occasion they shake hands firmly at the beginning and at the end of the meeting. Be prepared for your negotiating partner to answer the telephone by giving his or her surname, rather than saying "hello". Time and punctuality are also important and lateness may be interpreted as unreliability. If you are behind schedule, inform your negotiating partner and offer to re-arrange the meeting.