We haven't engaged them yet. OR: We haven't taken them on as regular employees yet.
Comment:
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.