For CP, the way it will range by region, sometimes even by location, specifically depends on who the boss is. If the boss has a built-in belief in safety, you'll see things get dealt with a little more, rather than sit on the minutes for an extended amount of time.
Again, if the employer has the ultimate say as to what gets fixed or doesn't get fixed, then that will drive your culture or the effectiveness of the committees.
That's why we again speak about regulation: at least there's a minimum standard that has to be fixed. If the employers can't meet the minimum standards, at least we have somebody to go to, and somebody has to come in to enforce these minimum standards.