This study examines the changes over time in the personal incomes of n
onresident fathers-whether divorced or nonmarital-in Wisconsin. Using
data from the Wisconsin Court Record data base and the Wisconsin Depar
tment of Revenue, the authors examine the incomes of these fathers ove
r the first seven years following a divorce or the initiation of a pat
ernity suit. They also study separately the income patterns of initial
ly poor nonresident fathers and fathers whose nonresident children rec
eive welfare. The most important finding is that the incomes of nonmar
ital fathers, which typically are low in the beginning, increase drama
tically over the years after paternity establishment-often to a level
comparable with the incomes of divorced fathers. On the basis of their
findings, the authors conclude that failing to establish child suppor
t obligations for nonresident fathers simply because their incomes are
initially low does not appear justified.