No. Your income should have no influence on your husband's child support for a child that's not yours.
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It is correct that they cannot consider your income to determine his child support. They will likely use the figure of 1.5 times the federal minimum wage as his income level. It is possible that they could determine the type of work that he is doing to help, and try place a value on those services, as potential income. Basically, unless he is physically disabled, they will use some level of income for him in the calculation, even if he is not actually receiving it. To determine that, they may be very interested in the exact tasks he does for you, because they will try to fit him in to a definition on the Wage and Salary Survey for Minnesota, and use that figure. If they do serve discovery on you, as a third party, you have significant rights, and you should contact an attorney right away. For example, you may be entitled to compensation beyond just the normal witness fees.
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