Enacts new GS 58-21-22 to provide that the amount of salary protection insurance plus the amount of any in-force disability income insurance, if applicable, will not exceed 75% of the individual's earned income, when salary protection insurance benefits are payable to an individual or the individual's beneficiary. Defines disability income insurance. Amends GS 58-21-10 to define salary protection insurance as insurance against financial loss caused by the cessation of earned income due to disability from sickness, ailment, or bodily injury. Makes a clarifying change. Effective October 1, 2011.