In general, client contracts should be as flexible as possible, though the level of flexibility will depend on the nature of the work. For example, a technology integration contract may require more adaptability than a market analysis contract. Regardless, it is essential to identify potential constraints and areas of flexibility during contract development. When applicable, the contract should reference the project plan and any relevant contingency plans. Clients should also be made aware in advance of the costs and benefits associated with modifying contract parameters. This proactive approach helps set clear expectations and minimizes potential frustrations if changes become necessary.