Employer.com is a new "brand" from long-established Recruiter.com. My guess is that Recruiter.com planned to launch Employer.com in the near-term, and they saw the Bench.co shutdown as the perfect opportunity so they've sped up their plans and "launched" employer.com.

edit: after reading Recruiter.com's investor filings (as they're a public company) the acquisition of Bench is going to kill them. The founder has gone hog wild on acquisitions despite having barely enough income to support them. It's a tale as old as time: a medium successful company goes public and starts issuing shares to fund acquisitions at a rate far outpacing the business growth and suddenly, one day, the music stops and everything comes crashing down.