Constructive obligation
From ACT Wiki
Financial reporting - provisions - contingent liabilities - International Accounting Standards - IAS 37.
IAS 37 deals with provisions, contingent liabilities and contingent assets.
Under IAS 37, a constructive obligation arises if past practice creates a valid expectation on the part of a third party, for example, a retail store that has a long-standing policy of allowing customers to return merchandise within, say, a 30-day period.
In turn, an event that creates a constructive obligation can be an obligating event under IAS 37.