Under the Holiday Act, an employer can only change a holiday you had already planned in particularly critical and unpredictable situations. For example, it is not enough that there is illness among your colleagues while you are on vacation.
If you suffer a financial loss in connection with changing your planned holiday, you can claim the loss covered by your employer.
If you have already started taking your holiday, the employer cannot interrupt it. However, special rules apply for government employees.
As a government employee, slightly different rules apply if your holiday is changed either before or after you have started it.