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ARTICLE · 07 OCTOBER 2026

PWC: Adjustments To The Contract Sum (Part 1)

William Fry LLP
William Fry LLP
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William Fry LLP

William Fry LLP

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Construction contracts under the Public Works Contract establish a rigorous procedural framework that contractors must navigate before any valuation of variations or compensation events can occur. This analysis examines the critical distinction between establishing entitlement through proper claims procedures and the subsequent valuation process, exploring how failure to comply with notice requirements and conditions precedent can bar claims regardless of their underlying merit.

IrelandReal Estate and Construction
Jarleth Heneghan
Jarleth Heneghan
Cassandra Byrne
Cassandra Byrne
Liam McCabe
Liam McCabe
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A contractor must comply with the contractual claims procedure before any assessment of valuation adjustments under the Public Works Contract (PWC). We examine the framework for testing entitlement before valuation.

Introduction

The PWC provides a structured mechanism for adjusting the contract sum in response to variations and compensation events. Clause 10.6 sets out a valuation hierarchy that governs how adjustments to the contract sum arising from compensation events are to be assessed. It is important for the employer and Employer’s Representatives (ERs) to recognise that before any question of valuation arises, a contractor must first navigate the significant procedural requirements set out in Clause 10.

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