It is also important for the contractor to be aware of the increased risk in public works contracts and to adjust his price accordingly. These new lump sum contracts can be quite onerous, and both parties should understand the obligations and risk involved in the work. Pricing documents will still include bills of quantities, which are used for controlling finance between contractor and employer. A deep understanding of these documents is required to manage and finalise payments, and produce an entitlement to the contractor. Other methods may also be used for design-and-construct contracts, where establishing payment is equally important.