In New Zealand, we have system of self-certification where the Electrician who installs ANY new work more or less takes full responsibility for all of the wiring in the Installation (that's the way I read it as, anyway).
If we are not given any powers to Disconnect any unsafe work or at least make it safe, this system seems a wee bit unfair, as it seems like there is no safety net, where there may be a bad join lurking in a wall or other such place and you can't check ALL of the wiring in an Installation. [Linked Image]