Economically Disadvantaged Women Owned Small Business Concern Certification by SBA - To be eligible, a firm must be at least 51% owned and controlled by one or more women, and primarily managed by one or more women. The women must be U.S. citizens. The firm must be ?small? in its primary industry in accordance with SBA?s size standards for that industry. In order for a WOSB to be deemed ?economically disadvantaged,? its owners must demonstrate economic disadvantage in accordance with the requirements set forth in the final rule.