You can still apply for the exemption from 1 April, 2019. The form (in Dutch) can be found below. These are the conditions:
• You are a salaried worker. This means you receive wages from an employer.
• We will look at the 12 months before your application. During at least 6 of these months you must have worked at least 48 hours a month.
The new rules are not yet final. They can still change. As soon as the rules are finalised, we will send you a message.