Scheduling is one other method in productivity improvement. Scheduling occurs at the
operation level of production planning and control system. Scheduling is important because it can
optimize resource allocation and minimize waste. Simulation analysis can be used to evaluate the
scheduling technique in order to determine the best alternatives. A case study company, Olilys Sdn.
Bhd. Did are facing with the unsystematic scheduling methods for the job orders received from
customers. The problem became worst during peak period (high demand) where the company unable
to fulfil the customer orders. The objective of this project is to study the existing scheduling technique
and find related problem, and propose an improvement in production scheduling system. In this project,
there are five scheduling techniques proposed, which are First Come First Serve (FCFS), Shortest
Processing Time (SPT), Longest Processing Time (LPT), Priority Rules by product sequences: By Part1
and By Part 2, and Earliest Due Date (EDD). The simulation modelling and experimentation being
done by using WITNESS simulation software. Through the experimentation analysis, the best
scheduling technique was selected and suggested to the company