Staff at a Nottinghamshire hospital have been banned from using the social networking website Facebook at work.
Staff say they should be able to decide what they do during breaks
Some workers at King's Mill Hospital in Sutton-in-Ashfield said they were angry about the move and argued they should be able to use the site at break times.
More than 100 users have joined the group Bring Facebook Back to King's Mill Hospital on the website.
A hospital spokesman said the ban was needed as some staff were using sites for personal reasons in work hours.
Steve Argent, spokesman for the Sherwood Forest Hospitals Trust, said: "We do monitor website usage, so we do know what people are looking at.
"We do find that people go on sites that they really shouldn't be looking at such as booking holidays, ordering shopping and just generally web browsing when they should be working.
"They are paid to come to work and work."
One worker wrote on the site: "What we do on our breaks... is our choice... If they don't want us to use the internet... get rid of it."
Earlier this year, Kent County Council and the Medway NHS Trust in Kent banned their workers from using the site - which allows members to keep in touch with friends and even throw virtual objects, such as sheep, at each other - in an effort to crack down on "time-wasting".
The TUC has said that all-out bans were not the answer and that firms should draw up guidelines instead.