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United Kingdom
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W options meaning
Published by a LexisNexis Construction expert
What does W options mean?
In NEC3 and NEC4 contracts, the W options are the standard dispute resolution clauses. They specify how disputes are managed during the project (including any adjudication or dispute board process), set procedural time limits, and identify the final tribunal (arbitration or court). The label is used in NEC forms rather than defined in legislation or case law.
Selection is mandatory: NEC3 requires W1 or W2; NEC4 requires W1, W2 or W3, chosen in the Contract Data.
- W2 is used where statutory adjudication applies, typically in England and Wales, Scotland and Northern Ireland under the Housing Grants, Construction and Regeneration Act 1996 (as amended), and in Ireland under the Construction Contracts Act 2013 (often with jurisdiction-specific amendments).
- W1 is used where no statutory adjudication regime applies (for example, certain international projects or excluded contract types).
- NEC4 W3 establishes a Dispute Avoidance Board (DAB) to help prevent and resolve disputes; it is generally intended for jurisdictions without mandatory adjudication and is not appropriate where statutory adjudication applies.
Choosing the correct W option is critical for compliance with adjudication legislation and to ensure enforceable, efficient dispute resolution on NEC projects across the UK and Ireland.
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View the related Practice Notes about W options
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