: Includes the appointment of a single adjudicator from the project's start to provide informal assistance and binding decisions.

: Unlike the 1999 edition, the 2nd edition requires an "Engineer" to act as a contract administrator and determine claims.

: Works typically completed within a short duration. Key New Features in the 2nd Edition

: A standout novelty, this allows for pre-calculated liquidated damages for contractor overheads during compensable delays, using a specific formula in the contract data.

The is a significant update to the original 1999 form, designed to provide a "get-on-with-it" solution for modern construction projects. While still maintaining its reputation for simplicity, this second edition introduces several advanced features that bridge the gap between informal agreements and the more complex FIDIC Red and Yellow Books. Overview of the 2021 Green Book

The 2021 edition has expanded from 10 pages of general conditions to roughly , reflecting new mechanisms designed for better risk management.

: Standardized fees are now set for terminations, such as 10% of the value of unexecuted works if terminated by the contractor for cause.

: Projects where the perceived level of risk is low.