__Fair dealing__ is a Limitations and exceptions to copyright to the exclusive right granted by copyright law to the author of a creative work. Fair dealing is found in many of the common law jurisdictions of the Commonwealth of Nations - wikipedia 
Fair dealing is an enumerated set of possible defences against an action for infringement of an exclusive right of copyright.
Unlike the related United States doctrine of fair use, fair dealing cannot apply to any act which does not fall within one of these categories, although common law courts in some jurisdictions are less stringent than others in this regard.
In practice, however, such courts might rule that actions with a commercial character, which might be naïvely assumed to fall into one of these categories, were in fact infringements of copyright, as fair dealing is not as flexible a concept as the American concept of fair use.
# United States
The parallel concept in United States copyright law is fair use. The term "fair dealing" has a different meaning in the U.S. It is a duty of full disclosure imposed upon corporate officers, fiduciaries, and parties to contracts - wikipedia
In the reported cases, it usually arises in the context of the "implied covenant of good faith and fair dealing," which underlies the tort cause of action for insurance bad faith.
# See also