Half of tax deduction in November/December

Hello dear Expats :) I'm new to this forum and already have big request to you guys that knows the law in Norway.

I would like to know is it possible somehow to dont get that benefit of paying only half of the tax in November as an employee? I have tax deduction on November same as on any other month and my current employer claims that I shouldnt get that benefit of 50% less tax.

Does law allows him to do so, are there any special circumstances where I shouldnt get that 50% less%?

You can ask the employer not to give you half tax in dec.  That only means you pay more tax than needed and get a refund next year after tax assessment.