At Salary.com, the arithmetic is based on the time and value of all the various jobs moms take on, including laundry-machine operator, janitor, van driver, cook, facilities manager, psychologist and CEO (of the entire household). The results show that stay-at-home moms put in one honey of a workweek: 94.7 hours. After factoring in duties and corresponding approximate wages ($36.85 hourly for the “psychologist” role, $13.11 for “cook” responsibilities), a stay-at-home mother is worth an average of $17.80 per hour, or $112,962 annually.