<Li> Type of Contract / Payment Schedule: The project acceptance will depend on if the budget available will be enough to cover the work required . Therefore, a breakdown of payments by whether they are up - front or phased will usually be negotiated in an early stage . </Li> <Li> Miscellaneous: Many items that are not part of the main negotiations may be listed because they are important to the project, and overlooking or forgetting them could pose problems for the project . </Li> <P> For US government service contracts, the use of SOWs remains strong, although Statements of Objectives (SOOs) and Performance Work Statements (PWSs) have become increasingly popular due to their emphasis on performance - based concepts such as desired service outcomes and performance standards . SOWs are typically used when the task is well - known and can be described in specific terms . They may be preferred when the government does not desire innovative approaches or considers any deviation in contractor processes a risk . SOOs establish high - level outcomes and objectives for performance and PWSs emphasize outcomes, desired results, and objectives at a more detailed and measurable level, whereas SOWs provide explicit statements of work direction for the contractor or offeror to follow . </P> <P> SOWs are typically replete with "contractor shall" statements of mandatory compliance (for example, "This task shall be performed in accordance with Agency xyz Directive, dated mm / dd / yyyy"). In practice, SOWs can also be found to contain references to desired performance outcomes, performance standards, and metrics, thus blurring their distinction between SOOs and PWSs . Aside from good practice, there is little government policy guidance that emphatically prescribes how and when to use SOWs versus SOOs or PWSs . Whereas the FAR defines PWS in Part 2 Definitions, and references SOOs and PWSs in Part 37.6 Performance Based Acquisition, SOWs are not addressed . </P>

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