I own and run a small business with six full time staff. They are mostly French nationals, while I am a UK national.
The team leader has decided to quit, and has shared this, along with the exact date, with all of her colleagues, except me - her boss. Someone decided to inform me, in confidence, and I am at a loss as to what to do.
She is now clearly under-performing in her job, but not in a way that would constitute misconduct. I am now are planning for her departure, but feel that her behaviour is unprofessional, and is bound to be destabilizing for the rest of the team, as we run a small shop, and her slack will affect others.
The date that she intends to leave would require giving notice in five weeks.
How can I address her change in attitude and drop in performance while not betraying the trust of the person who informed me of the team lead's departure?