Whatever you have is not a Netherlands work permit though because[1]: "Change of employer or job The residence permit is valid as long as you meet the requirem

Whatever you have is not a Netherlands work permit though because[1]: "Change of employer or job The residence permit is valid as long as you meet the requirements. This can also be the case if you change employers or job. If you no longer work for your employer, or change jobs as a result of which you no longer meet the rules for which the residence permit was issued, then your employer must notify the IND of this. If you have found another job as a highly skilled migrant, your new employer must notify the IND of this within 4 weeks. The IND will then check if the requirements are still met." Also this has much more requirements on issue than you described and the 30K number likely includes the changes described above, as well as extensions. 1. https://ind.nl/en/forms/3072.pdf https://ind.nl/en/forms/3072.pdf