Work that you are paid to do for a particular company or organization.1
Besides formal employment contracts, this entity can represent also other types of relationships.
The actor is most likely a Person, but not exclusively.
The *involvement target is most likely an Organisation Unit.
Those of Involvement.
Beside those inherited from Involvement and its predecessors, there is also a link to a contract: an instance of Document replacing the derived is-evidenced-by link from Activity.
- Close match of whatever
[1] Source: The Cambridge Dictionary of English. https://dictionary.cambridge.org/dictionary/english/employment