ABIE
Effective Date Period. Details
Indicates the date period in which the associated component is effective. Based on the same TimePeriodType UN/CEFACT ABIE (except start date is optional).

Allows the implementer to extend the base HR-XML specification.
This is done by defining the additional information in XML Schema and referencing the new schema in the xml instance document throught the use of namespaces. Once this is done the additional information defined there can be carried in the BOD XML instance document.

The first day of a time period or the first day on which a related entity or status is effective. Time periods delineated with a StartDate are
inclusive of the StartDate..