How much Norwegian you need, and where the official requirements come from.
Norwegian is not always required to get a job, but it helps in almost every part of working life. There are two separate questions: what your job needs, and what the authorities require for a permanent permit or citizenship.
This depends on the employer and the role. Some international workplaces use English every day. Many roles, especially customer-facing jobs, safety-critical work and regulated professions, expect good Norwegian. Your JobsNorway assessment looks at how important English and Norwegian are for the occupations that fit you.
Courses you have taken in the past may not count under newer rules, so check UDI before you pay for a course.
Municipalities offer Norwegian courses to many residence-permit holders, and whether a course is free or compulsory depends on your permit. Ny i Norge explains what applies, and private schools and online courses exist too. Start learning before you move if you can, because it makes the first months much easier.
General information, not legal advice. Requirements change, so confirm them with UDI. JobsNorway does not find jobs. Find out whether you can work in Norway.