Percent of employees covered by select provisions in defined benefit pension plans provided by single- and multi- private sector employers, 1994-95 Provision Percent of employees Percent of employees in single-employer in multi-employer plans plans Benefits based on earnings 77 0 Benefits based on dollar amount formula 18 65 Portability provisions 3 60 Retirement eligibility at age 62 23 39 Retirement eligibility at age 65 52 33