— ARTICLE AT A GLANCE
Who this is for: Government contractors, construction professionals, legal counsel, and organizations involved in government contract claims and disputes.
What you’ll learn: Explore how engaging an expert witness early in government contract disputes can strengthen cost and schedule analysis, identify documentation gaps, establish causation, and support more informed legal strategies and dispute resolution.
Read time: Approximately 6 minutes.
More government contract claims are reaching federal contract appeals boards. The Civilian Board of Contract Appeals reported 222 new Contract Disputes Act appeals in FY2025, up from 168 in FY2024. The Armed Services Board of Contract Appeals also saw an increase, with 351 new cases docketed in FY2025, up from 264 in FY2024. Behind those appeals are often years of project decisions, schedule updates, correspondence, accounting data, and technical facts that have to be organized into a defensible position.
These disputes often require more than legal strategy. They require an independent evaluation, expert analysis, and clear explanation of how the record connects to and supports the claimed cost, schedule, or economic damages.
For counsel, that can make expert witness services a practical consideration long before the expert report is due. In our work at Vertex, we are often retained when government contract disputes require specialized cost, schedule, or technical analysis. Depending on the engagement, that may include supporting case development through a consulting engagement or providing an independent expert opinion for testimony. The right expert can help evaluate what the record supports, where the analysis needs more detail, and how causation and associated cost or schedule impacts may need to be explained if the matter moves toward formal dispute resolution or trial.
Complex litigation often starts as a quantitative problem
Before counsel can decide how to advance a potential claim, they may want to better understand what the quantitative data can actually prove and how they stem from certain events.
Requests for Equitable Adjustment (REA) are one example. Under DFARS 252.243-7002 , an REA must reflect the contract adjustment the contractor believes the government is liable, include costs related to the change, exclude costs already reimbursed or separately claimed, and include indirect costs only when they are properly allocable to the change.
That means the occurrence of a cost increase or schedule delay is not enough on its own. When possible, the analysis should show what caused the cost increase or delay, and how the cost or delay connects to the claim being advanced.
That same analytical approach can be beneficial across other types of engagements too, including developing certified claims, analyzing cost and price issues in bid protests, preparing termination settlement proposals, and other cost accounting investigations and analyses.
In each case, counsel may have the legal strategy, but they need help making sense of the cost, schedule, financial, and data-heavy issues behind the claim.
Causal analysis can matter as much as the damages calculation itself. A detailed cost model can answer how much, but it should reflect why those damages stem from the underlying issues.
Causal analysis should begin before the expert report
Counsel may benefit from technical analysis well before an expert report is due. Waiting until the deadline to examine the assumptions, support, and critical path can leave fewer options to address analytical issues or gaps in the available evidence.
In government contract disputes, early independent analysis can help counsel:
- Asses the reasonable range of compensable delays and damages.
- Validate that assumptions are reasonable and appropriate.
- Identify industry-accepted methodologies given the facts.
- Document and explain the causal relationship between changes, delays, and damages.
- Assess potential accounting issues before they become larger dispute points.
- Clarify the factual issues before fact and expert testimony is required.
Early involvement may take different forms depending on the engagement. A consulting expert can help counsel assess technical issues, data gaps, and potential methodologies during case development. A testifying expert provides opinions that must stand on their own under the applicable disclosure and evidentiary rules.
Before a testifying expert is designated, counsel may want to understand how the proposed opinion can reasonably and reliably connect quantification methods to the facts of the case.
Documentation becomes harder when disputes last years
Government contract claims can involve long timelines. Under the Contract Disputes Act, contractor and government claims generally must be submitted within six years after the claim accrues.
By the time counsel needs a formal analysis, the project personnel may have changed roles, left the company, or forgotten why key decisions were made. We have seen large, complex problems span multiple years and multiple key project personnel, with files kept several different ways and accounting systems changing a few times.
During day-to-day project execution, inconsistent file names, scattered correspondence, or vague project records may not feel urgent. However, years later, those small recordkeeping choices can become major evidentiary obstacles.
A missing schedule update or vague daily report can add time to the analysis and make it harder to reconstruct what happened, when it happened, and why it mattered.
On long-running government contract disputes, outside experts can help explain gaps and provide some continuity when institutional knowledge has left the organization. The perspective is useful, but it works best when the underlying record is organized and complete.
Independence is what makes the expert witness analysis credible
While an expert may be retained by one party, a testifying expert’s opinions must remain independent and supported by facts, reliable principles, and the expert’s professional judgment. Our role is to help the trier of fact understand the key facts, methodology, and basis for our opinion in as simple a manner as possible.
Difficult conversations with clients can follow, especially when the record includes facts that complicate the position being advanced. We have to consider the facts, explain why they do or do not matter, and show how they affect the final opinion.
Independence is not a limitation on the work. It is what gives the opinion credibility.
Experts still own the methodology in technology-assisted analysis
Independence also matters when Artificial Intelligence (“AI”) tools enter the analysis. Generative AI may help organize large document sets, perform optical character recognition, structure raw data, or create efficiencies in review. It cannot replace the expert’s responsibility to understand the source data, test the assumptions, and explain the path from inputs to conclusions.
The legal profession is already treating AI use as a judgment issue, not a shortcut. The American Bar Association’s Formal Opinion 512 reminds lawyers using generative AI to consider duties involving competence, confidentiality, communication, supervision, candor, and fees. The National Institute of Standards and Technology’s AI Risk Management Framework also emphasizes the need to manage AI-related risks in ways that support trustworthy use.
Independence is not a limitation on the work. It is what gives the opinion credibility.
Experts still own the methodology in technology-assisted analysis
Independence also matters when Artificial Intelligence (“AI”) tools enter the analysis. Generative AI may help organize large document sets, perform optical character recognition, structure raw data, or create efficiencies in review. It cannot replace the expert’s responsibility to understand the source data, test the assumptions, and explain the path from inputs to conclusions.
The legal profession is already treating AI use as a judgment issue, not a shortcut. The American Bar Association’s Formal Opinion 512 reminds lawyers using generative AI to consider duties involving competence, confidentiality, communication, supervision, candor, and fees. The National Institute of Standards and Technology’s AI Risk Management Framework also emphasizes the need to manage AI-related risks in ways that support trustworthy use.
Expert opinions have to be traceable from the source data to the conclusion – walking through the data, top to bottom, and showing how it rolls up into the ultimate opinion.
AI-assisted data structuring, model outputs, or review tools can support the process, but the expert still has to verify the underlying information and explain the methodology.
A strong expert can help move disputes toward resolution
Expert witness work often extends beyond report writing and testifying. A credible expert witness analysis can also change the posture of a dispute, oftentimes assisting with dispute resolution. Vertex experts and consultants support case development, dispute analysis, or testimony preparation by:
- Analyzing technical and financial data;
- Identifying factual gaps;
- Evaluating alternative methodologies; or
- Providing analysis that helps parties assess disputed issues.
Clear and credible expert analyses can help counsel understand risk, narrow disputed issues, and give the other side, mediator, arbitrator, judge, or jury a basis to evaluate the issues. For example, our experts have helped clients move toward dispute resolution following issuance of an expert report that clarified the issues, allowing the parties to return to the negotiation table before trial.
Vertex’s government contracts team of experts provides valuable insight into government contract cost, price, estimating, and scheduling issues. Our experience spans nearly every aspect of the complex and heavily regulated government contracts industry.
Learn more about Vertex’s government contract expert witness services. Fill out the form below to connect with our team today and discuss how we can support your needs.
