Social networks have revolutionised the way many businesses operate, both internally and externally, and Generation Y increasingly expects work processes to use a Web 2.0/social media format. This article examines how UK employers can: Manage employees' use of social media (where use is excessive, inappropriate and/or leads to loss of productivity). Protect themselves against liability for employees' actions on social media sites. Monitor employees' use of social networks without infringing their privacy. Protect themselves on the departure of an employee. This article is part of the multi-jurisdictional guide to employment and employee benefits. For a full list of contents visit www.practicallaw.com/employment-mjg.