There are different types of visas depending on the purpose of a travel to Norway. Therefore, it is necessary to apply for a different Norwegian Schengen Visa, since Norway is as an EFTA Member, they also became a member state of the Schengen Area in 2001.
General Norwegian Visa documents required
First of all, it is required to download and fill the application form or to fill the Norway Schengen Visa application form electronically and then print a hard-copy. Also you will need to attach with the application form the following documents: 2 passport format photos, passport, copies of previous visas (valid for at least 3 months beyond return date), copy of return-ticket reservation including flight reservation with dates and flight numbers, travel insurance confirmation of minimum 30,000 € coverage within Norway and the entire Schengen area, a cover letter stating the purpose of visit to Norway and itinerary, proof of accommodation for the whole duration of the intended stay in Norway, proof of civil status and means of subsistence as a proof of sufficient financial means for the period of stay in Norway (minimum 500 NOK/53.34€, amount is not officially fixed and might be decided on a case-by-case basis) are required.
For Employed applicants also an Employment contract, current bank statement of the latest 6 months, leave permission from employer and Income Tax Return (ITR) form or certificate of Income Tax deducted at the source of salary are required.