When is a proof of service necessary?

• A. For a Notice of Delay only
• B. For a Notice Denying Liability only
• C. both
• D. Neither

Answer: (B)

Proof of service is required when a document directly affects the claimant’s rights and starts a deadline for action. A Notice Denying Liability is a formal adverse determination that creates a right to protest or request a hearing within a specific timeframe, so it must be served with a verifiable record showing the recipient received it. This ensures due process and that the deadline isn’t defeated by disputed delivery. A Notice of Delay, by contrast, is typically informational and does not itself trigger a new right to contest or a fixed deadline, so it does not require a proof of service in the same way. Therefore, the proof of service is necessary for a Notice Denying Liability.