What are the advantages and disadvantages in employee hiring?

This question needs to be refined further to truly get the
answer for which you are looking.  As it stands, I can only give you a generic answer.
 When thinking of the advantages of hiring, several ideas come to mind.  Fresh thinking
and approaches can bring successful ideas to a new company.  Another idea is the spark
new partnerships can provoke, thus preventing the company from getting stale.  In
looking at disadvantages, think about the opposites of the positives.  With a new hire
comes training and time to explain procedures.  A new group dynamic has to be created so
that the group functions to the best of its ability.  With whatever industry you are
working with, a new employee creates both advantages and disadvantages.  Now develop
your own ideas, and your essay should work.