Apparently they are having difficulty in finding staff.
Faced with a lack of qualified workers, Swiss Federal Railways is paying its staff SFr2,500 ($2,804) to recommend candidates for interview.
According to a report in the Sonntag newspaper, employees get the money even if the person they put forward is not taken on. With 28,000 on the pay roll, Swiss Federal Railways is one of the country’s biggest employers.
The cash incentive was introduced in 2007 when Swiss Railways had difficulty in finding
engine mechanics, ticket inspectors and IT staff.
More
Job Portal;
http://www.sbb.ch/en/corporation/jobs-careers.html