Contract Advice Notes Part 1 sets out the broad legal obligations and duties that derive from a contract agreement. Frequently, ecologists and environmental managers are involved in designing and supervising, for example, habitat management and/or creation schemes which involve acting as an agent for the client and supervising the works undertaken by a contractor. Advice Note 2 sets out the elements of managing a contract that a professional ecologist should be aware of and makes recommendations for ensuring that the quality of work is maintained until contract completion.