Production planning is a very important activity for a manufacturing company. For a company producing a variety of
product the produclion planning will be complicated. In this case it's necessary that the company 10 make an aggregate
production planning. There are many goals to achieve in production activities. Where the goal sotnetime differeni from
each other. On such condition company needs to make a produclion planning decition thai can accomodate all of the goals.
Goal Programmingmodel can be used for aggregate production planning. This multi objective model can accomodate more
than one goal which will be achieved by the company. Product demand forecasting is input for aggregate production
planning. From this aggregate production, futhermore, disaggregation must be conducted, then it must be contintred by
raw material planning. The raw material planning is made irr economical lot size each order. The Goal Programming
model has been applied at PT. Arga Tiria Lestari Pontianak in goals to maximize profit, minitnize subcontract product
amount, minimize overtime labour cost and minimize inventory amount. The result shows thai the Goal Programming model could accomodate three goals that will be achieved by lhe company, except that goal to minintize inventory annount.
The solution provided by the Goal Programming model could reduce the minimize overtime labour cost of the realization by as rnuch as 64%. Least Unit Cost (LUC) and Wagner-Whitin Algorithrn (WW) methods give the minimum total cost for logs raw material planning