Over a decade ago, PriceWaterhouseCooper conducted a survey on staff retention across Europe, sampling over 7,000 personnel. Of the 1,000 British participants, 47% were planning on leaving their jobs sometime soon.
Whether that figure has gone up or down. there's no doubt that loss of staff is a huge expense generally underestimated by company leaders. If they know that it's going to cost around 15K should someone walk, and still do nothing to salvage the situation, it's only going to get worse. Reputations suffer, people get restless, pockets of discontent grow out of proportion, and the company's health becomes threatened by an overspill of demoralised inertia.
Don't let that happen to you. Cruise this website for more on how to stop your ship from sinking. The article linked below gives you those figures from 2010.