Vantaggi
Friendly Coworkers are about the only pro.
Svantaggi
Consistent unreasonable expectations and timelines frequently pop up due to the disconnect from various teams to each other, and you will be at fault for not getting it all done "on time" even when a turnaround time is unreasonable. There is little to no room to grow, and promotions do not mean a whole lot except that you will have more responsibility with little to no pay increase. Billable hour goals are not motivating or rewarding. You have to bust your butt for an entire year to barely get a raise on par with a cost of living adjustment. There's a reason people rarely stay longer than 2 or 3 years, and it's because WTW doesn't respect the work and development of their employees, or reward them for dedication and hard work.