Apart from your AOW pension, you may build up a supplementary pension, for example through your employer.
If you work for an employer, you may build up a supplementary pension through your employer. This is a company pension. Every month, your employer pays a pension contribution for you to a pension fund. You will probably also pay a contribution via your salary.
When you reach your pension age, the pension fund will pay you a company pension. You can ask your employer or your pension fund how much pension you can expect. You can also get an overview of your pensions at Mijnpensioenoverzicht.nl.
If you have worked for other employers in the past, you have probably built up pension with different pension funds.
For an overview of all your pensions, go to Mijnpensioenoverzicht.nl. Or you can contact the pension funds concerned directly.