NEC4 in practice

Variation tracker: using an instruction register on NEC4

Use an instruction register to connect an instruction with its source, review and commercial outcome. The register supports the contract process; it does not replace it.

Scope: Practical commentary on NEC4 ECC. Check the edition, selected options, Contract Data and amendments used on your project.

Use the register alongside the contract

For NEC4 ECC, distinguish an instruction changing Scope from the compensation event process that may follow. Clause 60.1(1) includes exceptions, so not every instruction changing Scope is automatically a compensation event. Record the issuing person and their authority.

For JCT, check the specific form and edition, including the authorised role and confirmation requirements. Do not carry NEC4 labels, notification periods or valuation rules into a JCT register unchanged.

Keep the fields connected

Give each entry a stable reference. Include the date, description, responsible person, supporting record links, contractual communication reference, status and next action. Keep a history of changes instead of overwriting the original account.

Check that dates, amounts and status fields have clear meanings. Separate a forecast from an agreed figure and a site observation from a contractual decision.

Existing Excel template

Download the existing Excel template.

Before using it on a live project, check its fields, formulas and date conventions against your contract. Do not treat a calculated alert, comparison or total as a decision on contractual entitlement. The template supports record keeping; the team remains responsible for notices, assessment and review.

Review the log with the commercial team

Check new entries, approaching deadlines, missing evidence and unresolved responses. Assign each next step to a named person. Retain the formal notice or decision separately and link it to the register.

Sources and further reading

Gather’s Record Management System helps teams organise the site evidence used in commercial reviews. See how Gather works.