While reviewing the borrower's employment, the underwriter must determine the stability of the income. People who are employed by a company and earn hourly wages pose the lowest risk. Self-employed borrowers pose the highest risk, since they are typically responsible for the debt and well-being of the business in addition to their personal responsibilities. Commission income also carries similar risks in the stability of income because if for any reason the borrower fails to produce business, it directly influences the amount of income produced. Usually if self-employment or commission income is used to qualify for the mortgage, a two-year history of receiving that income is required. Although a bonus (sometime it is indicated as "incentive pay" by many corporations) is part of the paystub income, a two-year employer verification is also required.