Low down Admn t at our job?

its bad enough the admn t dont come to work and hates doing things for us, but she and our boss are lovers. they both are married with kids. she is much younger than he, he is letting her run the company.that's ok is they are messing around, but she will not do anything fo us and people are quiting the company. its her job to submit time, and along with many other things to our corp office, but they dont even get along with her. this has been brought to our boss attention, but he still lets her get away with murder. she has mentioned peoples personal business out in the cubicles for others to hear, but who does this need to be reported to if our boss will not do anything? we are going crazy and need help!!!they both need to be fired...oh by the way, she is also expecting his child..NEED HELP BAD!!!! she is a DEVIL