Fifty-eight percent of hiring managers say they leave some negotiating room 
  when extending initial offers, according to a recent survey by CareerBuilder.com. 
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Get Your Report Now!The company conducted the online survey, which included more than 875 hiring 
  managers, from August 10 to August 22, 2005.
Nearly six-in-ten say they will extend a new offer once, and one-in-ten will 
  extend a new offer twice or more if they really want the candidate. Thirty percent 
  of hiring managers say the first offer is final.
"Attempting to negotiate a better offer is almost always in a candidate's 
  best interest," says Richard Castellini, vice president of consumer marketing 
  for CareerBuilder.com. "In fact, nearly one-in-ten hiring managers say 
  they think less of a candidate who accepts the first offer. Salary negotiations 
  demonstrate a candidate's determination, persistence, and recognition of the 
  value he/she brings to an employer."
Thirty-four percent of hiring managers say highlighting specific accomplishments 
  and results is the most convincing way for candidates to negotiate a better 
  offer, Castellini says. Nearly one-in-three hiring managers say they consider 
  a candidate's references first in salary negotiations.