Management reserve and the performance measurement baseline
In GAO's usage, management reserve is budget held outside the performance measurement baseline for in-scope problems such as accidents, errors or technical redirection. When part of it is allocated to a problem, that part joins the baseline; it can never be used to cover up an existing cost variance.
Where the reserve sits
The performance measurement baseline does not include management reserve or fee. Management reserve plus the performance measurement baseline make up the contract budget base. Because the reserve is outside the baseline, it is not tied to any particular work until a risk is realized and recovery actions are identified. Then it is distributed to the control account that needs it.
GAO lists the uses: unanticipated effort from accidents, errors, technical redirections or contractor-initiated studies. It applies only to in-scope work. GAO notes that programs typically set aside 5 to 10 percent, and that a risk analysis is one way to size it.
Watching the burn rate
GAO says plotting the allocation and burn rate of management reserve helps track risk. Once the reserve is gone, any further realized risk can only show up as unfavorable cost variance. Risks from the cost estimate's uncertainty analysis should be compared with reserve allocations, to see where in the WBS risks are turning into issues.
GAO calls it alarming when reserve is used faster than the program progresses, for example 80 percent of the reserve used with 40 percent of the work complete. Reserve is most needed in the latter half of a program, for problems in testing and evaluation.
Keeping the baseline current
Approved changes must be incorporated into the EVM system as soon as possible. If they wait, the performance measurement baseline becomes outdated and the variances it produces no longer reflect reality. A newly approved work package goes into the baseline now, not at the next scheduled replan.
A note on terms
GAO's cost guide uses 'management reserve' for known unknowns tied to the contract's scope and managed by the contractor, and 'contingency' for funds held by the government program office for unknown unknowns outside the contractor's control. GAO says other organizations may use the terms differently, so read each question's wording carefully.
Where the exam catches people
Believing management reserve can absorb an overrun that has already happened: GAO says it cannot be used to offset or minimize existing cost variances.
Believing management reserve is part of the performance measurement baseline: it sits outside it, and only an allocated portion joins it.
Believing approved changes can wait for the next replan: GAO says to incorporate them as soon as possible or the variances stop reflecting reality.
Believing a fast reserve burn is fine while reserve remains: GAO calls it alarming and says to compare reserve use with the identified risks.