Manage Change before it manages you

I read above quotation somewhere and noted in a pocket diary. Today, while going through the book I found this again.
Many changes take place everywhere and we carry out those changes most of the times to meet immediate requirement rather than analyzing for hidden dangers (or side effects). My colleague's brother who was a scientist during his government service used to say, 'what is temporary today is permanent'.
Safety professionals will be facing problems in convincing the shop floor managers to carryout proper hazard analysis and many times, the reply will be that they need clearance to execute so and so job and later it will be removed or it will be taken up for study.
There were a number of examples listed by reputed safety professional Trevor Kletz in his books like, What Went Wrong, Still Going Wrong, Learning from Disasters, etc, where many incidents took place because of improper or no evaluation of hazards.  Management of change is an important aspect in industries without which, we may end up with unforeseen events.
Sometimes, even shop floor workers too will find safety department an obstacle to their production job because of questions raised on safety, though, if something wrong occurs, it is the safety professional who will be questioned for not being authoritative or not active.
Hence, whatever be the nature of change or modification proposed, let it be process parameters, raw materials, equipment, or its accessories, auxiliary services, supports, or even operators, one should carry out a detailed analysis for hazards, impact on operation due to lack of knowledge/training/behavior, etc and then only proceed if satisfied with the results.