The app CAO DSM Netherlands have you working at your fingertips, you can apply it to your own situation and you thinking about your collective agreement.
 
In addition to full-text of the CAO app contains a number of useful tools such as a uurwaardecalculator. You will also find a calendar with CLA-related data in the app.

We ask you in the section "Do it" to answer a short topical questions. You see immediately how other users have answered the question. Regular new questions will be available.