Introduction: Swiss Post and Telecommunications (PTT) is the largest state-owned enterprise in Switzerland. It consists of two major business units, Post and Telecommunications, and is directly under the jurisdiction of the Swiss Federal Council. It was founded in 1847. It was originally started by the telegraph business. Today it has grown into a large-scale company with more than 50,000 employees, a service network covering all corners of Switzerland, and an annual turnover of more than 11 billion Swiss francs (1997) enterprise.