Delay Claims on Public Projects: Proving Cause and Calculating Damages

Delays on public works projects are common. Weather, design changes, permitting issues, and coordination failures can push schedules weeks or months beyond the original completion date. For subcontractors, delays mean extended overhead, lost productivity, out-of-sequence work, and opportunity cost.

But recovering delay damages is notoriously difficult. Unlike a scope dispute (where you can point to specific work that was or wasn't included), a delay claim requires proving causation — a direct, demonstrable link between someone else's action (or inaction) and your financial loss.

Types of Delays

Construction delays fall into three categories:

- Excusable, compensable delays — caused by the owner or GC (design changes, late information, directed suspensions). The sub gets both a time extension and money. - Excusable, non-compensable delays — caused by events outside anyone's control (weather, force majeure). The sub gets time but not money. - Non-excusable delays — caused by the sub. No time extension, and possibly exposure to liquidated damages.

The complexity increases when multiple causes overlap (concurrent delay). If the project is delayed by both owner-caused design changes and sub-caused labor shortages, apportioning responsibility becomes an expensive analytical exercise.

Building the Delay Claim

A credible delay claim requires:

1. Baseline schedule. The original, approved project schedule establishes the plan. 2. Updated schedules or time impact analyses. These show how the delay event affected the critical path. 3. Contemporaneous records. Daily reports, correspondence, RFI logs, and meeting minutes that document the delay as it happened — not reconstructed months later. 4. Causation analysis. A clear narrative (often supported by a scheduling expert) showing that the delay event pushed your work past its planned dates. 5. Damages calculation. Extended general conditions, lost productivity, overtime premiums, equipment standby, escalation costs, and home office overhead (often calculated using the Eichleay formula on public work).

The most important element is contemporaneous documentation. If your daily reports from the delay period don't mention the delay cause, your claim will struggle regardless of how strong the scheduling analysis is.

The Bottom Line

Delay claims are among the most complex and highest-value claims on public works projects, but they require meticulous documentation to succeed. On Caltrans projects, Section 8-1.07 requires time extension requests within 15 days of the delay event. Failure to submit within this window can waive your right to a time extension entirely. Section 8-1.10 specifies liquidated damages by project value tier, ranging from $2,800 per day on contracts under $200,000 to $19,300 per day on contracts over $100 million.

On local agency projects, the Greenbook Section 6-6.4 requires written delay claim requests within 30 days after the beginning of the delay and at least 15 days before the specified completion date. Failure to file within these windows is grounds for the Agency to refuse the request.

The subcontractors who recover on delay claims are the ones who documented the delay in real time: daily reports noting the cause and duration, written notices to the GC citing specific contract provisions, schedule analyses showing the critical path impact, and cost records tracking the additional expenses. Build the claim file as the delay happens, not after the project is over.