Former employees can often make successful rehires — they are known quantities and are familiar with your organization’s unique culture.
But bringing a former colleague back needs to be done thoughtfully:
Do your due diligence. You may assume you know what you’re getting when hiring back former employees. But, you should go through a rigorous interview and screening process — just as you would for a new candidate — to be sure the returning employee is truly qualified for the job at hand.
Communicate. Be sure the rest of the organization, especially those employees who were candidates for the position, knows the reasons for bringing back the employee.
Brief the returning employee. The employee will need to know what the current situation is at the company, with special attention paid to what has changed since her departure.
Adapted from “Should You Rehire Former Employees?” by Claudio Fernández-Aráoz.