"Serial Bully" is a term that Tim Field coined to describe the character he realised was behind the majority of cases that came to his attention when he ran the UK National Workplace Bullying Advice Line between 1996 and 2004. Callers described similar character traits, patterns of behaviour and events indicating that, in a given workplace, there was usually one person responsible for the bullying, for whom bullying was a modus operandi.

Tim observed that when one target left the bully's environment, the bully would then focus their obnoxious behaviour on someone else; the new target would eventually leave and another would unwittingly take their place, hence the term "serial bully".

Tim's ground-breaking insights and their value to society are recognised by the Tim Field Foundation, which is grateful for the privilege of preserving, refining and building upon Tim Field's original work.