1958 3 July 4/3 Modern business techniques using ‘work study’ and the ‘O. and M.’ treatment (Organisation and Methods), can prove ‘a considerable help to us in the hospitals’.
1965 7 May 707/2 An O & M survey should swiftly be initiated to decide what dead wood needs to be cut out.
1971 K. Gottschalk in B. de Ferranti v. 46 Groups concerned with efficiency in the office are sometimes called organization and methods (O & M) groups.