scope:

Use/relationship: This documents the Contract Work Breakdown Structure (CWBS) and its extension by the contractor using terminology and definitions, as applicable, in MILHDBK- 881.

This DID summarizes the format for the CWBS and provides preparation instructions to support the data and frequency requirements specified in the contract. This DID applies to all contracts that require a Work Breakdown Structure (WBS). It is related to the four Contractor Cost Data Reporting (CCDR) formats: DD Form 1921, "Cost Data Summary Report" (DI-FNCL-81565); DD Form 1921-1, "Functional Cost-Hour Report" (DI-FNCL-81566); and DD Form 1921-2, "Progress Curve Report" (DI-FNCL-81567); This DID is also related to the "Contract Performance Report" (DI-MGMT-81466) and DD Form 1586, "Contract Funds Status Report" (DI-MGMT-81468).

For those contracts with Cost and Software Data Reporting (CSDR) requirements, the CWBS must agree with the contract CSDR Plan approved by the Office of the Secretary of Defense (OSD) Deputy Director, Cost Assessment (DDCA).

The purpose and intent of the CWBS and CWBS dictionary is to document the contractor's deliverable products and planned approach to performing the contract scope of work. It also contains the technical description of the military end item being developed/procured by the contract. The technical definitions and descriptions of each product-oriented (i.e., hardware) WBS element should be derived from the contractor's systems engineering Integrated Product Team (IPT) or related technical department. The cost content of each WBS element definition should be produced by the contractor's finance department.

MIL-HDBK-881 serves as the basis for developing the CWBS. Routine reporting shall be at CWBS level 3 for all contractors. Extensions of the CWBS can be tailored to the specific program but will be consistent with MIL-HDBK-881. More detailed reporting of the CWBS shall be required only for those lower-level elements that address high-risk, high-value, or high-technical-interest areas of a program. Identifying these additional elements for inclusion in the CWBS is a critical early assignment for the Cost Working- Group Integrated Product Team (CWIPT) for inclusion in the CWBS.

The reporting contractor must prepare and submit, using the CSDR Submit-Review System, the first contract CWBS Index and Dictionary at the same time the first Interim Report is due or, when the Initial Report, if required, is due. However, contractors also have the option to submit the Index and Dictionary earlier to facilitate report planning. The reporting contractor must also maintain and update the Dictionary throughout the life of the contract. If changes to the CWBS occur, the contractor must submit an updated CWBS Index and Dictionary with the next affected CSD Reports. The contractor is not required to submit the updated CWBS Index and Dictionary more frequently than its CSDR submissions.

This DID supersedes DI-MGMT-81334C.