Workers do not like lying to colleagues face-to-face and prefer the anonymity of the phone or e-mail, a study says.
Workers prefer lying over e-mail or the phone
About a third of all work communication involves some kind of deception, the study of North West firms found.
Withholding or distorting information and changing the subject of e-mails to confuse colleagues are among the most frequent tricks.
The results of the University of Central Lancashire research were being presented in Bristol on Wednesday.
It is one of a number of events taking place at the British Psychological Society's occupational psychology conference in the city.
The research was carried out by Dr Sandi Mann and Ms Wincy Shek of the university.
Dr Mann said: "This study suggests that deception occurs frequently in everyday workplace communications.
"Some types of deception occur more frequently than others, and managers and employees should be on their guard for these.
"Not only does deception occur less frequently in face-to-face interactions, but also when people are communicating with those that they feel closer to."
Ms Shek advised managers to encourage team-building activities in a bid to develop "psychological closeness" amongst employees.