The study in Britain observed that one in three workers finds their kindred spirits sitting across the desks or gossiping around the water cooler in the office.
As many as one-third of the 2,012 participants polled admitted making majority of their friends through work, the 'Daily Mail' reported.
Over one in ten said their friendship group consists mainly of friends met at university and 4 per cent while on holiday.
Researchers found that Britons now have little time to spend on hobbies after work that just three in 100 friends are now forged through sport, music and the arts.
According to the study, a third of adults met their best buddy when they shared a classroom as school pupils.
This was followed by friends made at workplace (27 per cent), through other friends, (11 per cent), and university (10 per cent), the poll of 2,012 people found.
Just 1 per cent met friends while house sharing.
Among men and women aged over 50, friendships made at school still account for one in six of their social circle, indicating these friendships do last a lifetime.