If you become unemployed in the Netherlands, you should register with the local Center for Work and Income (Centrum voor Werk en Inkomen, CWI). EU nationals can use its services after completing the entry formalities concerning registration.
If you are entitled to unemployment benefit and have normally been claiming this for at least four weeks in your country, you may continue to receive it for up to three months in the Netherlands, while you actively seek work there. You must first tell your local Public Employment Office (where you are registered) of your intention to look for work in the Netherlands well in advance of your departure date. You must ask for form E303 and E119 before you leave. The form E303, which secures the payment of your unemployment benefit in the Netherlands, should be taken to the CWI, nearest to where you live, as soon as possible after your arrival in the Netherlands. The form E119 secures your sickness insurance has also to be presented at the CWI