We haven't engaged them yet. OR: We haven't taken them on as regular employees yet.
The topic is elis, whose referent was introduced in the preceding sentence in the discourse. The referent of noos is speaker and his relatives who are running a business, and excludes the addressee (who is neither a relative nor involved in the business).
Elis-pa illustrates accusative marking on pronominal P, different from A and S.
This example also illustrates the unmarked negative, which may refer to present, past or near future time.