You can travel using your OV-chipkaart as from the date indicated in the letter enclosing your OV-chipkaart. This will be the start date you requested. The date is definitive and from this date you commute between home and work using your OV-chipkaart for a period of four weeks entirely free of charge and without any other obligations.
If you have any more questions, you can contact our customer service on weekdays between 08.00 and 20.00 hours on phonenumber 043 - 799 94 09. Or by using the contactform.