To resolve potential problems before they arise on the job, meet with the architect, general contractor, owner, and other subcontractors. To ensure that it takes place among all parties involved in a project, communication should be formalized in one or more prejob meetings after the contract is signed. By improving efficiency, prejob meetings can save 5% to 20% of the unforeseen added costs that usually occur after construction begins. The most effective meetings involve the following participants: the masonry contractor's representatives, including the project manager, foreman, and, if the company is small, the owner; the general contractor's project manager and superintendent; the architect and sometimes engineers employed on the project; and the construction manager or other owner's representative. Other trades-such as steel, electrical, or plumbing contractors-should attend only if necessary to resolve particular problems. An abundance of topics should be discussed in prejob meetings because so many things can go wrong on the job. To get the most out of a prejob meeting, come well-prepared. This demonstrates professionalism, saves everyone time, and minimizes the possibility of future problems.