<xs:simpleType name="noYesWorkerDoesntKnow">
  <xs:annotation>
    <xs:documentation xml:lang="en">0 = No, 1 = Yes, 2 = Worker Doesn't Know, 99 = Data Not Collected</xs:documentation>
  </xs:annotation>
  <xs:restriction base="xs:unsignedInt">
    <xs:enumeration value="0">
      <xs:annotation>
        <xs:documentation xml:lang="en">No</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="1">
      <xs:annotation>
        <xs:documentation xml:lang="en">Yes</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="2">
      <xs:annotation>
        <xs:documentation xml:lang="en">Worker Doesn't Know</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="99">
      <xs:annotation>
        <xs:documentation xml:lang="en">Data not collected</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
  </xs:restriction>
</xs:simpleType>