Pros
Aon name resonates well with other Fortune 500 companies and they are willing to offer more money because they think your making a lot of money at Aon.
Cons
If your young your low balled a salary and management loves to joke about it.Always negotiate! Older colleagues who came to Aon when they paid well do same or less work often make 30 to 50% more than younger colleagues who do the most work. CEO is very conservative but puts on a facade that the company isn't . Company only cares about quarterly earnings for execs and shareholders. No organic growth only acquisitions. Keeps operating expenses down(meaning no raises) stock price is over inflated as internally company not doing as well as outsiders think. Heavy Turnover, cuts to benefits every year,shift cost to employees, fake Glassdoor reviews to pump up fake engagement .