This article examines the economic impacts of offshore petroleum extra
ction and production on communities in Louisiana. The study extends pr
evious work concerning the economic impacts of energy development by i
ncluding all phases of petroleum development, by accounting for the de
gree and type of involvement of the community in petroleum production,
by using analysis of variance to determine the effect of the rate and
direction of change in as well as level of petroleum activity, and by
using time series regression to examine the effect of year-to-year ch
anges in activity on year-to-year changes in economic impacts. The fin
dings show an initial improvement in economic conditions followed by s
erious economic decline. The results also point out the need for a div
ersified involvement in petroleum production and the necessity of miti
gation programs during the boom and decline in petroleum activity.