Concurrent Delay
A situation where both the owner and the contractor cause independent delays to the project's critical path at the same time, complicating who's responsible for the resulting schedule impact, since neither party's delay alone fully explains the overrun.
Why it matters
A concurrent delay finding doesn't split responsibility evenly, it typically limits what either side can recover from the other for that overlapping period, which is exactly why an owner's forensic scheduler actively looks for it in every delay claim.
On a real project
A contractor's own labor shortage delays framing during the same two-week window an owner-caused design change is also working its way through approval on the project's critical path, a genuine concurrent delay that complicates the contractor's claim for that period.
Who this matters most to
A Scheduling & Delay Consultant investigates whether a claimed delay period actually overlaps with a separate, independent delay the other party caused.
Where this goes wrong
A contractor claims full compensation for an owner-caused delay without acknowledging that its own separate, independent delay was happening on the critical path during that same period. The owner's forensic scheduler catches the concurrency, substantially reducing what the contractor can actually recover.