How can office staff be encouraged to switch off electrical equipment before they go home?

How can office staff be encouraged to switch off electrical equipment before they go home?

Chris Moon (Head of Sustainability, GREEN YOUR OFFICE) gives expert video advice on: What equipment potentially wastes energy in the office?; How can my office save energy on lighting in the office?; Is it okay to leave phone or laptop chargers plugged in when they are not charging? and more...