PERSPECTIVES: How Common is "Parking" among Social Security Disability Insurance Beneficiaries? Evidence from the 1999 Change in the Earnings Level of Substantial Gainful Activity

by Jody Schimmel, David C. Stapleton, and Jae Song
Social Security Bulletin, Vol. 71, No. 4, 2011
Table equivalent for Chart 2. Cumulative distribution of monthly earnings in the TWP completion year and in the second year after TWP completion, 1996 and 1998 cohorts
Monthly earnings ($) TWP completion year Second year after TWP completion
1996 cohort 1998 cohort 1996 cohort 1998 cohort
350 43.12 39.21 51.03 47.45
450 53.96 50.19 59.01 54.23
550 61.01 57.18 63.76 59.71
650 66.39 62.40 66.86 64.05
750 70.57 66.74 69.51 66.74
850 74.09 70.34 71.83 69.16
950 77.13 73.53 73.82 71.20
1,050 79.76 76.21 75.69 73.09
SOURCE: SSA's 2007 TRF data merged with MEF data.
NOTES: Nominal earnings are in $100 intervals; the dollar value denoted is the midpoint of the interval. Level differences across the cohorts reflect our use of nominal earnings; when earnings were adjusted by the contemporaneous AWI, those level differences disappeared.
Table equivalent for Chart 3. Cumulative distribution of monthly earnings in the second year after TWP completion, 1996 cohort (actual earnings) and 1998 cohort (adjusted earnings)
Monthly earnings ($) 1996 cohort 1998 cohort
350 51.03 51.37
450 59.01 58.00
550 63.76 63.54
650 66.86 68.04
750 69.51 70.58
850 71.83 72.92
950 73.82 74.79
1,050 75.69 76.64
1,150 77.34 77.95
1,250 79.06 79.25
SOURCE: SSA's 2007 TRF data merged with MEF data.
NOTES: The 1998 cohort distribution has been shifted upward by the vertical distance between the TWP-year distribution for the two cohorts. Nominal earnings are in $100 intervals; the dollar value denoted is the midpoint of the interval.
Table equivalent for Chart 4. Mean number of NSTW months in the TWP completion year, by TWP-year average monthly earnings interval, 1996 and 1998 cohorts
TWP completion year earnings interval ($) 1996 cohort 1998 cohort
Less than 500 0.2 0.2
500–699 1.0 0.9
700–999 1.7 1.6
1,000 or more 2.8 3.0
SOURCE: SSA's 2007 TRF data merged with MEF data.