A boon and a bane. On one hand they can cut through needless word-proliferation:

ERISA” means The Employee Retirement Income Security Act of 1974 (Pub.L. 93–406, 88 Stat. 829, enacted September 2, 1974, codified in part at 29 U.S.C. ch. 18) as amended, restated or superseded from time to time.

On the other hand, they can complicate a document by obliging the reader to flip back and forth to find what the definitions mean, especially where the definitions are embedded in the body of the agreement and not in a definitions section. Dear old ISDA loves definitions, and you will be obliged to consult one or several definitions booklets, often with conflicting definitions, as well as the definitons in ISDA Master Agreement, the Schedule and the Confirmation to work out what a capitalised expression might mean

The JC’s rules of thumb

Where: Generally, put definitions at the end of the agreement. Embed them in the body of the agreement where they are used only in a single clause. Then, it is easier to see the definition where it first appears in context than have to flip to the back of the document.
What: Use definitions in two cases:

  • Where it will save a lot of repetition: An expression which is (a) wordy and (b) appears a LOT in the agreement. If it only appears twice or three times, why define it?
  • To gather together disparate concepts into a single expression and it would not otherwise be obvious.

When not to use definitions: When the defined term is obvious. Everyone knows that the EU means the European Union. Everyone knows MiFID 2 means


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See also