When determining entitlement to U.S. Totalization benefits under the Agreement, the
                  Social Security Administration (SSA) can only count periods of Australian working
                  life residence when the worker was employed or self-employed. However, since Australia's
                  system is based on residence rather than work, the Australian agency may not be able
                  to determine whether the worker was employed versus self-employed during any particular
                  period of residence. To assist Australian authorities in locating all work-related
                  periods of residence, the applicant should submit any evidence (e.g., pay slips, letters
                  from employers, tax returns) the applicant has showing periods of work in Australia.