This is how it's often translated in my experience.

-> "2. Premium savings scheme
The employer deducts an agreed amount from the net salary and deposits it in a savings account in the name of the employee. The employer may grant a tax free savings premium up to 100% of the saved sum. The premium is fiscally limited to 1,138 dfl a year. This scheme also includes the condition that the money remains in deposit for at least four years, and that premature withdrawals are permitted only under certain circumstances."
http://www.cbs.nl/en/figures/keyfigures/hfo0511y.htm

-> "We further offer a flexible pension scheme, the opportunity to join our premium savings scheme and salary savings scheme, a contribution to medical insurance, advantageous group insurance and a home PC scheme."
http://www.eur.nl/vacature/Holding0210.html

Premium savings scheme
The employer deducts an agreed amount from the net salary and deposits it in a savings account in the name of the employee.

The employer may grant a tax free savings premium up to 100% of the saved sum.
The premium is fiscally limited to 1,138 dfl a year. This scheme also includes the condition that the money remains in deposit for at least four years, and that premature withdrawals are permitted only under certain circumstances.

ref. http://www.cbs.nl/en/figures/keyfigures/hfo0511y.htm

The American refer to it as a pension plan, but UK and commonwealth countries usually use the word superannuation.
It generally conssists of regular amounts (premies) paid by both the employee and the employer, and subject to strict rules (accessibility at retirement etc), it is usually treated preferentially from a tax point of view.
Cheers
Louis