3.1 The contractorâs paramount obligation is to âcarry out and complete the Worksâ. This obligation, which is stated in Article 1, reinforced in clause 2.1, is discussed in detail below. In addition, the contractor has important obligations in relation to progress and programming, discussed in Chapter 4, and in regard to insurance matters, discussed in Chapter 8. Additional obligations may also arise from the optional supplemental provisions (Schedule 5). The contractorâs main obligations and powers under IC16 and ICD16 are summarised in Tables 3.1 and 3.2.