Having a job alongside your study can help you to pay your study. We do not recommend to start a job immediately after you arrived in the Netherlands: take at least half a year to a year to get used to the country, your study and to make friends. Once you are settled, it is also easier to find a job.
If you are from an EU or EEA country (other than Croatia) or a Swiss national, you can work as much as you like while studying, without needing a permit. If you are from another country, you can either do seasonal work or get a small part-time job, provided you get a work permit. Your employer has to apply for the work permit, and please be aware that not all employers are willing to do this, so finding a job as a non-EU student is not always easy! If you work, you must get local medical insurance. For details, also about working during an internship, check Study in Holland.
Read Precious´ story about working alongside her study.