Im not scared of my bosses at all. Ive worked for many years and people in charge of others are very often not worth the respect they command. Many managers get where they are for all the wrong reasons. No one should feel frightened of their boss. Even if you do something wrong (within normal working practice) you should not be intimidated. You will receive criticism, based on your work and should be given the advice need to stop the incident happening again. Your company pays you to carry out what is in your work description and contract. Thats all you need to worry about. You need to start worrying if they make life difficult and become personal.