All but Which One of the Following Has Been Identified

Multiple Choice

All but which one of the following has been identified as a cause of increased labour- management friction in the federal public service?

A) restrictive legislative framework for public service labour relations
B) the government's low wage offers,at a time when MPs had just voted themselves a big raise
C) tough union tactics
D) government imposition of back- to- work legislation
E) suppression of arbitration for ten years