Abstract
This paper discussesa design of production planning rule for the type of system in which raw materials are suppleid mostly seasonally and which has a limited shelf life. On the other hand, demand for the products is almost constant through the year. It is proposed that the size of work force gives a measure of production activities. We introduced a control variable which coordinated between the production quantities of the final and intermediate products in the season of raw material's supply. The derived production planning rule is able to minimize the obfective function.
