This article presents a labor supply model designed to address situations o
f overemployment or underemployment in the labor market. Previous labor sup
ply models have taken the possibility of work hour constraints into conside
ration but typically assumed that the existence of fixed work hours only in
fluenced the decision of labor force participation. This ignores situations
in which individuals choose to be employed at fixed-hour jobs even though
these jobs do not offer the desired work hours. (JEL J22).