The management of earthwork is one of the most important issues in construction process. Especially in the government sector, there are many rules and procedures related to each party including owners, contractors and construction managers. This research aims to study earthwork management in building construction projects in Bangkok held by the government sector. It focus on methods of problem solving and effects of management by observing the specific case studies. This research had involved twenty projects of the government sector in Bangkok. The volume of earthwork in each project is higher than 10,000 Nm3. The researcher made an interview to the relevant person in each project about earthwork management, specification forms, problems and consequential outcomes of project delay. The researcher have considered the building laws and regulations that effective after the 2002 B.C. and project contracts with the interview part. The initial study shows that there are many specification forms of earthwork used by each government organization. Including the form of requirements in the contracts are specifying the distance, but did not specify where the earthworks was filled place, determining the distance and get the filled place, the unlimited mileage and determine where to pick up the filled place later, And the contracts are specifying to give rights to the contractor. The form of such contracts. As a result, some projects contractors can implement the agreement, enforcement and would not cause construction delay. But some projects Contractors cannot manage the earthwork process under contract. Whether those form can cause any the problems in earthwork process, particularly they may cause delay to the projects which is the vital matter of the construction process. The researcher has found the contractors could make use of this incident by claiming for both postponement and compensation which can severely cause damage to the government sector. In sum, the conclusion shows the earthwork management guidelines for buildings in government sector in order to develop construction contracts or agreements and save its benefits in the future.