Project based engagements operate on the basis of agreeing work and any outcomes or milestones for delivery in advance of commencement of any engagement in a ‘Statement of Work’. Prices are fixed for the agreed deliverables and should changes be required, these may incur changes to delivery costs. Payment for Project Based Engagements are agreed on a case-by-case basis, giving consideration to risk, contract value, client payment history, relationship longevity and duration.