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NEC4 Contract Updates and Changes

Jul 26, 2025

Summary

  • This webinar, led by Rob Gerrard and Richard Patterson, focused on key changes and updates in the NEC4 Engineering and Construction Contract, particularly regarding the project manager's role.
  • Major topics included new and revised secondary options, important language and terminology updates, and changes in core clauses affecting contract administration and dispute avoidance.
  • Practical implications for project managers, including quality management, payment, program acceptance, and final assessment processes, were discussed.
  • The session concluded with a Q&A addressing implementation details, training/accreditation changes, and next steps for broader NEC4 rollout.

Action Items

  • Publish slides and unanswered Q&A after presentation – Rob & Richard
  • Update training and teaching materials for September to reflect NEC4 – All trainers
  • Integrate new value engineering percentage and program acceptance protocol into project templates – Contract administrators
  • Include quality management system requirements in contract scopes – Project managers
  • Add process and deadlines for final defined cost closure into project workflows – Project managers
  • Coordinate with NEC Users’ Group for latest guidance on alliancing and information modeling – Interested parties
  • Prepare for annual NEC Users’ Group seminar on 22 June – Organizers
  • Ensure transition and top-up accreditation resources are available for NEC3-accredited project managers – Accreditation team

Changes to NEC4 Secondary Options

  • Introduction of the Dispute Avoidance Board as a standard option, bringing NEC in line with international best practices.
  • Addition of undertakings to the client (collateral warranties) and transfer of rights clauses (intellectual property), adapted from the Professional Services Contract.
  • Parent company guarantee updated to "ultimate holding company guarantee," with minor drafting changes.
  • X15 (contractor’s design) now covers skill, care, professional indemnity insurance, and clarifies intellectual property/licensing, now including a reversal of burden of proof.
  • X21 introduces a whole life cost clause, allowing operational expenditure improvements to be proposed by the contractor.
  • X22 formalizes Early Contractor Involvement (ECI), significantly altering procurement and the project manager’s role.
  • Information modeling now a formal requirement, intentionally broader than just BIM, with specified roles for project manager regarding information execution plans.

Language and Terminology Updates

  • Section 10.1 split for clarity; spirit of "mutual trust and cooperation" unchanged.
  • X12 rebranded as "multiparty collaboration" (was "partnering"); content itself not changed.
  • "Risk register" renamed "early warning register" for clarity and consistency.
  • "Works information" now called "scope"; "employer" is now "client"; "employer risk" now "client’s liability".
  • Minor tweaks across Section 8 to clarify meaning and consistency; overall intent unchanged.

Core Clause and Operational Changes

  • Explicit prompts for specifying required communication system and other key contract data.
  • Obligation for project manager to set up the early warning register and schedule regular early warning/risk reduction meetings.
  • Clear mechanism for contractors to submit proposals for changes to the client scope, with value engineering percentages now required even under Options A/B.
  • Subcontracting process largely unchanged but with adjusted definitions and requirements for pricing information.
  • Program submission and acceptance: if the project manager fails to respond within 2 weeks, a contractor prompt can trigger a "treated as accepted" program—heightening the importance of timely project manager action.
  • Program and compensation event meetings now expected as good practice (though not strictly enforced by remedy clauses).
  • Payment now requires contractor application; only one fee percentage will be used (removing subcontracted fee percentage).
  • Preparation of compensation events is now recoverable as defined cost (A/B), if it truly increases cost.
  • Defined cost closure mechanism: contractor can trigger finalization with a submission; PM has a set period to respond, after which costs are locked.

Quality Management and Final Assessment

  • Section 4 now called "Quality Management" rather than "Testing and Defects".
  • Contractor must operate a quality management system per requirements stated in scope, submit quality policy statement and plan for acceptance.
  • These quality requirements are now managed by the project manager, not the supervisor.
  • Final assessment clause: within 4 weeks of defect certificate, PM must conduct final assessment; if not, contractor can do so.
  • New procedures for dispute of final assessment, with clear timelines for referrals to senior representatives/dispute boards/adjudicator.

Options A, B, C, D, and E – Commercial Provisions

  • Only one short schedule of cost components now for A/B; tendered rates for compensation events.
  • Subcontractor costs included as invoice amounts, aligning with other options and simplifying practice.
  • Removal of separate overhead percentages in all options; these costs now treated as part of direct cost/equipment.
  • Clarified processes for compensation event quotation and dividing date for forecasting costs.

Decisions

  • Dispute Avoidance Board adopted as standard secondary option — Aligns NEC with international norms and promotes proactive dispute resolution.
  • Scope, terminology, and core process changes standardized — Reduces confusion between NEC contract types.
  • "Treated as accepted" program provision introduced — Ensures contract progress when project manager is nonresponsive but increases need for diligence.
  • Fee percentages and defined cost rules simplified — Reduces complexity in payment and compensation event assessment.

Open Questions / Follow-Ups

  • How will updated value engineering percentages be set in practice, and what guidance will be provided on selecting appropriate percentages?
  • Details of transition and top-up paths for NEC3-accredited project managers to NEC4 certification to be clarified by accreditation bodies.
  • Further implementation guidance on information modeling and the differences between X12 and the forthcoming alliancing contract is pending.
  • Additional detail and market feedback on practical issues of managing new cost components (e.g., equipment vs. overhead) in long-term contracts.
  • Some unanswered questions from the Q&A are to be addressed and published with the slides post-webinar.