Please, greenspire, please!  "Many workers": can you be more specific?  What's the percentage ratio of those who spend their erstwhile productive energy on CYA and brown-nosing activities"?  Is it 30%?  45%? Some other figure?

Second: "over 80%": can you cite the research/source for this figure? This may be true of YOUR workplace, but we need empirical evidence, here.   

Third: Is this necessarily bad?  Perhaps the workplace environment is toxic.  Perhaps the "brown-noters" are merely trying to keep their families together, free from financial stress. If their brown-nosing activities are successful, what does that say about the employers' management??

All joking aside, folks, what you read in THIS comment is what you'll read in countless others. Nobody is immune. Even the President of the United States (witness the latest: "fire and fury.")