This site is sponsored by
Crucible
Technologies. It has information on 
Why Use Telephone Headsets?
Comfort
If an office worker is using a computer keyboard whilst on the telephone, then the handset tends to be cradled between the neck and shoulders. This posture can cause neck and shoulder pain and lead to a range of problems in the back (including lower back) and arms. By providing a telephone headset to people who use the telephone often, this risk can be minimised as a better posture can be achieved.
Productivity
Using a telephone headset can also increase productivity by up to 43%. This is because both hands are free to take written notes, use a computer keyboard or search/open files. It has been estimated that on average, people can make 16 more calls a day when headsets are used, compared to handsets.
Freedom and mobility
Headsets free your hands to enter data, create quotes, confirm customer orders or take notes. Wireless headsets also enable the user to walk around whilst on the telephone therefore providing far greater movement.
