Jurisdiction(s):
United Kingdom

Related legal acts

Key definition

NEC definition

What does NEC mean? NEC (formerly “New Engineering contract”) describes the widely used suite of standard-form construction and engineering contracts published by the Institution of Civil Engineers. It is not defined in legislation; the term is a descriptive label for these standard forms. The current edition is NEC4 (first issued 2017 and periodically updated). NEC3 remains in circulation on legacy and ongoing projects. Core forms include the NEC4 Engineering and Construction Contract (ECC), Professional Services Contract (PSC), Term Service Contract (TSC), Framework Contract (FC), Supply Contract (SC) and the Alliance Contract (ALC). Key legal features include collaborative drafting, proactive risk management (early warnings and the...

Comprehensive guide to NEC Term Service Contracts (NEC3/NEC4): options, Scope, early warnings, programmes, payment, compensation events, liabilities, termination, disputes, Z clauses and subcontracting

Published by a LexisNexis Construction expert

Practice notes

What is the ?

The , or TSC, forms part of the NEC3 and NEC4 suites of Contracts (see Practice Note: NEC contracts—introduction). It is intended to appoint a contractor for a defined period to manage and deliver a service—this may include construction activities, but it is equally applicable to other service provision

Maintaining highways within a specified area
Providing security personnel for a site
Maintaining a nuclear power station
Delivering ambulance services for a group of hospitals

These examples, drawn from the NEC Guidance Notes, show that it covers both ‘hard’ and ‘soft’ facilities management services (see Practice Note: What is Facilities Management Contracting?). As with other NEC forms, it can be adopted in both the public and private sectors and is suitable for services of any value

It is not intended to operate like the NEC3/NEC4 Framework Contract, under which there is no guarantee of work. Instead, the Contractor undertakes work on a continuous basis as set out in the contract without needing a separate order from the Client, and/or performs works instructed on a task-by-task basis...

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Web page updated on 21/05/2026

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