Peter Costello is hazardous to your health! This from yesterday's House of Reps Hansard:

Ms BIRD (Cunningham) (3.14 p.m.)—Mr Speaker, are members of this House covered by occupational health and safety legislation? Does the volume of the microphone conform to these laws when the Treasurer is screaming at the dispatch box?

The SPEAKER —I thank the member for Cunningham for her question. I will seek further information and come back to her.

I'll keep you posted.