Section 1337.110-71 - Additional DOC clauses related to service contracting(a) Insert a clause substantially similar to 1352.237-74, Progress Reports, where progress reports are required in order to make periodic payments based upon contract progress made, or if the contracting officer otherwise determines that progress reports are needed.(b) Insert a clause substantially similar to 1352.237-75, Key Personnel, when contract performance requires identification of contractor key personnel.