These are costs that are not usually included in the "cost-per-hire" metric. They include unnecessary and unproductive time spent by your recruiters, managers and employees. The must spend time dealing with low value-added aspects of recruitment (too many employees participating in interviews, too many interviews, too many long interviews, etc.).
12. Measuring only time is not enough
The actual number of days needed to fill a position can be a very misleading metric. Apart from the speed, quality should be measured as well.
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Article source ERE.net - Recruiting Intelligence. Recruiting Community.