Construction projects have great importance in the world economy and they have been becoming morecomplex every day due to the advancement of technology, the growth of the project scales, the proliferationof the parties, the diversification and increase of the demands. In particular, changes in constructionprojects throughout project duration due to change orders or other reasons have a great impact on theproject duration, budget and quality, which characterize the success of construction projects, and pose agreat threat to the completion of construction projects with the desired performance. Different changerequests and the claims arising from them were examined, and their effects on the project duration, budget,work efficiency and relations between the parties were revealed. Control steps and forms have been createdto ensure claim control. In this study, control steps, flowcharts and forms were created for the systematicfollow-up of job changes and the successful management of claims arising from job changes by conductingcase studies on a sample project where job change orders occur frequently. Different change orders andthe claims arising from different types of change orders were examined, and their effects on the projectduration, budget, efficiency and relations between the parties were revealed. In order to manage claimsquickly and accurately, the disruptions and problems in the claim management process due to changeorders were presented and control steps and forms were created in order to ensure a systematic job changeand claim control. By the aid of these control steps, flowcharts and forms, both project managementcompanies, contractors and owners will be able to manage job changes quickly, not to lose productivity inthe project, and to ensure correct and systematic management of business changes and claims that concernall project parties.