Simpson joined the editorial staff of the
OED in 1976 to work on the
Supplement to the OED. He was Co-Editor of the Second Edition of the
OED, published in 1989, and in 1993 was appointed Chief Editor, a position he held until his retirement in October 2013. As Chief Editor, he led the first comprehensive revision of the
OED and oversaw the introduction of its online version. Simpson is a member of the English Faculty at the
University of Oxford, an Emeritus Fellow of
Kellogg College, Oxford, and a member of the
Philological Society, where the idea of the Dictionary was first proposed in the 1850s. He was a founder member of the European Federation of National Institutions for Language and has acted as an adviser to a number of other national dictionaries, including the
Opera del Vocabolario Italiano and the
Australian National Dictionary. He has been awarded two
D.Litt degrees, the first in 1999 by the
Australian National University for his "distinguished creative achievement as a scholar in lexicography", and the second in 2015 by the
University of Leicester for his work on the
OED. He was appointed
Officer of the Order of the British Empire (OBE) in the
2014 Birthday Honours for services to literature. ==Publications==