What is sweat equity and how does it work?
If your husband is truly an employee, he should be receiving his full salary, less any legal deductions for taxes, Medicare, etc. If he isn't, there had better be a r-e-a-l-l-y good reason for it, like contributing to the employer's stock option plan.
But even those can be risky if he works for a privately-held company. You and your husband (together) should speak to your financial advisor and an employment attorney to make sure this arrangement is on the up-and-up.