If you have become incapacitated for work and you are receiving disability benefits, you will accrue 50% of your pension up until the time that you reach the state pension age (AOW). You will not pay any contribution for this accrual.
If you are ill for a long period of time, the Employee Insurance Agency (UWV) will make a decision about your incapacity for work 104 weeks after your first sick day.
Radboud University