Are you going to work abroad temporarily? Sometimes, you need an A1 certificate. Such a statement proves that you remain insured for social security in your home country.
Do you partly work outside the Netherlands? Check whether the 183-day rule applies. This determines whether the country of employment or residence may levy tax on the income.
During your emigration out of or immigration to the Netherlands, a lot needs to be arranged. Think of determining your tax liability, income tax return & allowances. Read everything here.