Quality of hire: the metric that matters most and is hardest to measure

Recruiting teams report time-to-hire and cost-per-hire because they're easy to count, not because they're what matters. You can be fast and cheap and still hire people who underperform or leave in six months, which is the most expensive outcome of all. Quality of hire is the metric that actually answers "are we hiring the right people?" and it gets neglected precisely because it's hard. Optimising only the easy metrics is looking for your keys under the streetlight.

Quality of hire is hard for honest reasons. It only becomes visible months after the hire, long after the recruiting process closed. It mixes things that are hard to quantify (performance, culture add) with the cleaner ones (retention). And it's confounded: a great hire under a bad manager can look like a bad hire. So nobody should pretend there's a single clean number. What you can build is a small set of honest proxies that, together, tell you whether your hiring is getting better or worse over time.

Combine a few signals rather than chasing one number. Retention past probation and past one year, the cleanest objective signal; a hire who leaves fast was usually a mismatch someone should have caught. Hiring-manager satisfaction at, say, 90 days, a simple "would you hire this person again?" captures a lot. Ramp time, how long until the person is fully productive, against expectation. And, where roles have them, early performance ratings. None is perfect alone; tracked together and trended over time, they tell you whether your process is improving.

Quality of hire becomes actionable the moment you connect it back to the recruiting process: which sources, which interviewers, which screening signals predicted the hires that worked out? That's only possible if the hire's record still links to how they were sourced and assessed. KI BMS keeps the candidate's source, screening, and stage history on the record after they're hired, so when you later mark who turned out to be a strong hire, you can trace it back to the channel and the signals that found them, and do more of what works. Without that link, quality of hire is a number with no lever attached.