According to a study, excessive use of smartphones, laptops and tablets can be a major risk to people's health as they are working with them even after leaving office.

People have becomes nothing more than screen slaves as they are working even after getting back home after work, according to the Chartered Society of Physiotherapy.

There can be neck and back pain due to a poor posture maintained while working with these machines. About two thirds of people, according to an online survey continued working outside office hours.

Over two hours of extra screen time was something that people were spending apart from their work on an average day, the organization said.

The extra workload was due to too much work and easing pressure during the day.

The chairwoman of the society said, "The findings were of huge concern. While doing a bit of extra work at home may seem like a good short-term fix, if it becomes a regular part of your evening routine then it can lead to problems such as back and neck pain, as well as stress-related illness."