Demarcation dispute
 

 

A dispute at a place of work, resulting from friction between or within trade unions, and caused by an inability to agree on the apportionment of work between categories of workpeople. That such problems have long been with us That such problems have long been with us is evidenced by a case in 1623 where it was plaster with lime and hair but with lime and sand only and that plastering with lime and hair should belong unto the plasterers'.

Reference: The Penguin Business Dictionary, 3rd edt.