Collective Employment Law (Collective Labour Agreement)

The lawyers of De Haij & Van der Wende have a lot of knowledge and experience in the field of collective labor law. Many employees in the Netherlands fall (indirectly) under a collective labor agreement ("cao"). The cao is therefore a very essential employment conditions scheme. Entrepreneurs and companies also often have questions about the cao. Am I obliged to fall under this cao, or could it be that I have a different cao, based on the scope? What should I pay attention to when drafting my own (company) cao? What flexibility does the cao provide for own employment conditions schemes or deviations?