Note that regardless of the ordinary income, the basis for calculation of the illness benefit has an upper limit of 6G, where 1G is the National Insurance basic amount (of money) used for calculating benefits from the social services. Consequently, even with 100% coverage, no one will receive more than six times the basic amount. From May 2011 1G is equal to NOK 79.216,-.
Support stemming from the special rules on occupational injuries of the national insurance scheme is obligatory for the employees. In general, self-employed businessmen and freelancers are not covered by these rules. If you, however, have entered the voluntary national insurance scheme, you are covered.
The premium for the voluntary scheme is a deductible expense on the tax return.
Information about the scheme is available at the local office of the Norwegian Labour and Welfare Organization (NAV).