The 1940's were a turning point in married women's labor-force participation, leading many to credit World War II with spurring economic and social change. This paper uses two retrospective surveys, from 1944 and 1951, to show that half of all married women employed in 1950 were working in 1940, and more than half of the decade's new entrants joined after the war. Of all wartime entrants, the majority exited after 1944 but before 1950. The war had several significant indirect impacts on women's employment, but its direct influence appears to have been more modest.

Manufacturers can stimulate sales by a temporary wholesale price reduction for the retailer, a rebate directed toward consumers, or a combination of both. The trade-offs between these price promotions are analyzed, providing insights about their roles, profitability, and welfare properties. Retailers' rebates are also studied. While price discrimination is a common explanation for rebates to consumers, when a product is sold through a distribution channel, the manufacturer may also use rebates to motivate retail participation in the promotion. This explains why rebates may be offered even when all consumers use them and price discrimination does not occur.

This paper examines the empirical validity of a model of homogeneous input demand under price uncertainty in which firms trade off expected input cost against its variability (risk) in selecting the optimal input supplier mix. Using recent work in time-series econometrics, this model is applied to the Japanese steam-coal import market, where five suppliers compete: China, the Soviet Union, South Africa, the United States, and Australia.