NEC3 ECSC: What are the main differences between long and short form ECC

What are the main differences between long and short form ECC in terms of actual conditions of contract and what are the advantaged of the long form over the short form


The short form (ECSC) is shorter.

That’s the unhelpful answer! More helpful is the points below looking at shorter contract:

  1. ECSC is more concise - just 7 pages of main contract clauses rather than 26
  2. It is intended to be used for more low risk straight forward work with not too much change envisgaed - hence it needs less processes to administer it
  3. No options A-F like you get with ECC, it is a mixture of option A/B
  4. Contract data slightly more detailed for ECSC as it encompasses some of the secondary options from ECC to be filled in e.g. delay damages are…
  5. Contract documents are all part of the contract with ECSC. You fill in the six sections which includes listing Works Information, and includes listing programme requirements (rather than it being the prescriptive requirements of ECC in terms of programme content and acceptance)

Great for low risk straight forward work - if it is not this then use the ECC contract. If in doubt go ECC as better to be protected than not - but equally use the simplicity of ECSC when the project is right to do so.

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The time element of Compensation Events is also assessed differently, see the webinar here How to produce and update your Programme under NEC4 ECC - Slide 3 of 4 - Course - Bridge (

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