Nearly the entire leadership of the company is run by former McKinsey partners on down the line. The issue with this is the management is more concerned with chasing a quarterly revenue goal than they are with building long-term sustainable growth. How can you have a department that is growing by 35% year over year and not increase their manpower? You end up working the people you have to death and it creates an atmosphere and environment where you are required to be working at home and on the weekends. This isn't management consulting and we shouldn't be trying to turn Aon into a management consulting firm. People will work hard, but to expect them to choose between their families and their job is going too far in your quest to chase a quarterly revenue and stock price.
Then to make matters worse, even though the group does well but because other groups in the division did not, only a few people get bonuses. So on top of working everyone to death, they get less than 2% raises and half of them get no bonus.