New business relationships are required when PPP approaches are used to deliver projects, often with larger national or international firms that can handle the increased risk and responsibility of a PPP contract. This, in turn generates competition and fairness concerns, both for the government (which must worry about attracting a sufficient number of bids for the contract) and for smaller contractors (who may feel unable to compete in the new environment). In addition, the scope and complexity of negotiations between the government and its contractors can increase significantly, as the allocation of risk, the acceptable rate of return, and the contract incentives must be carefully defined.