48 C.F.R. § 1511.011-73
The Contracting Officer shall insert the clause at 1552.211-73, Level of Effort—Cost Reimbursement Contract, in cost-reimbursement contracts including cost contracts without fee, cost-sharing contracts, cost-plus-fixed-fee (CPFF) contracts, cost-plus-incentive-fee contracts (CPIF), and cost-plus-award-fee contracts (CPAF).
[81 FR 31866, May 20, 2016]