Has been commenced in a sentence?
Sentence examples for has been commenced from inspiring English sources. Some authorities suggest that it is the result from overvigorous fluid replacement, but the complication may develop before treatment has been commenced. ... Ideally, patients would be randomised before any kind of treatment has been commenced.
Is commenced or has commenced?
Both are correct, although in the original context I would prefer the former. It is more strongly suggestive of a situation where the contractual partner does the "commencing", rather than a more general situation where anyone might have started it.