(a) For purposes of this title, “earned income” means, except as provided in subdivision (b), income from wages, salaries, professional fees, and other amounts received or promised to be received as compensation for personal services rendered.
(b) Income which is not “earned income” includes, but is not limited to, the following:
(1) Any income derived from stocks, bonds, property, or other investments, or from retail or wholesale sales.
(2) Any amount paid by, or on behalf of, an elected state officer to a tax-qualified pension, profit sharing, or stock bonus plan and received by the elected state officer from the plan.
(3) The community property interest in the income of a spouse.