The first is that there are no interactions between seasonal cycles and business cycles they result from different exogenous factors and different economic propagation mechanisms the second is that there are no important welfare issues attached to seasonal fluctuations per se optimal government policy toward seasonals is simply to leave them alone. The economics of seasonal cycles by jeffrey a miron focuses on economic rather than purely statistical issues looking at which of the alternative statistical models of seasonality are plausible for economic variables and asking why seasonal fluctuations in economic variables require special treatment relative to other kinds of fluctuations. Compared to existing work on seasonality mirons book focuses on economic rather than purely statistical issues looking at which of the alternative statistical models of seasonality are plausible for economic variables and asking why seasonal fluctuations in economic variables require special treatment relative to other kinds of fluctuationsmiron first addresses the question of why macroeconomists should be interested in seasonal as opposed to business cycle fluctuations. The essay then discusses the possible welfare implications of seasonal cycles suggesting there is no reasonable presumption they are uninteresting from a welfare or policy perspective taken together these results imply the need for a significant re orientation in economists treatment of seasonal fluctuations