Traditionally, a manufacturing business competes on price, variety, and afterrnservice. Now, these conditions are merely prerequisites. Few businessesrnexist today without offering this requirement, and the key competitive factorrnhas become speed. Major businesses have been trying to adopt new businessrninitiatives in order to stay alive in the new competitive market place, andrnthere is no question that the elimination of waste is an essential ingredientrnfor survival in today's manufacturing world. Companies must strive to creaternhigh quality, and low cost products that can get to the customers in thernshortest time possible. Just-in-time production system is one of theserninitiatives that focus on cost reduction by eliminating non-value addedrnactivities. The tools and techniques of JIT have been widely used in bothrndiscrete and process industry starting with the introduction of the originalrnToyota production system.rnThis thesis addresses the implementation of Just-in-Time production systemrnwith focus on AMCE and AABGF. The goal of this research is to investigaternhow JIT can be implemented in these companies. This thesis attempts tornintroduce JIT from its conception, and many collaborative JIT concepts,rncomponents, elements, and tools that are used for the elimination of wastesrnare addressed. To develop the implementation model first the status of therncompanies were investigated and then the problems are identified andrnxrnformulated. The JIT implementation guidelines developed by APICS andrnothers have been seen to develop the line implementation model of JIT forrnthe companies. It has been seen that only a hybrid (Push-Pull) JIT systems isrnapplicable to both companies. In the implementation model developed, Valuernstream mapping was used as a tool. The companies can use it to identifyrnvarious types of waste in the value stream of the company and try to takernsteps to eliminate them. Finally the conclusions and recommendations arernprovided for the thesis.