A study shows that about half of the thousands of employees surveyed never negotiate their salaries, and another large percentage rarely negotiate. That same survey showed that 54 percent of hiring managers are willing to negotiate on initial offers and nearly half were flexible on other perks and benefits, if not the base salary. In other words, a lot of people could be better compensated if they had asked. A veteran who specializes in transition has these tips for your first (or next) salary negotiation.