NEC4: Term Service Subcontract

NEC4: Term Service Subcontract
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The NEC4 Term Service Subcontract (TSS) is for appointing a term service subcontractor where the contractor has been appointed under an NEC4 Term Service Contract (TSC) or other NEC4 main contract. It is for appointing a subcontractor over a fixed period to provide an ongoing maintenance, repair or other service for an operational asset, including one-off tasks.

The TSS offers three main payment Options: A (priced subcontract with price list), C (target subcontract with price list) and E (cost-reimbursable subcontract). A different Option from the main contract can be used in each subcontract. The service described in the scope can include individual projects that are instructed and quoted for as tasks, with specific start dates, completion dates and delay damages.

In addition to the main Options, the document contains everything you need to prepare, tender and manage an NEC4 TSS, including all secondary Options and forms for the relevant cost schedules and contract data.


The TSS is part of the NEC4 suite of collaborative, flexible and clearly written contracts for built environment procurement. The suite has a global track record for delivering all kinds and sizes of building and infrastructure projects and services on time, on budget and to the highest environmental and quality standards.

As with all NEC4 contracts, the parties to a TSS are required to act in a ‘spirit of mutual trust and co-operation’ and give early warnings of anything that could affect time, cost or effectiveness of the service so it can be mitigated without delay.

Change is dealt with by a fast and fair compensation event process which, together with a continually updated and agreed plan, ensures there are no surprises at the end of the contract.