Pros
As with any large company, I think your experience varies based upon the location in which you work. If you are interviewed by management only, I would ask to connect with people who would be peers to get their favorite/least favorite things about the job and the branch. Starting pay can be decent (some positions, probably not all), but do your research and know what to ask for. Bonus structure is fair. Gallagher stock is available to purchase.
Cons
Biggest con for me: no support while you take PTO. You have a back-up Client Manager who will jump in if something is on fire, but outside of that, good luck taking PTO for a week+ if you have any clients in renewal or pre-renewal. Another big one: You will work with multiple producers (some are awesome, some are not). Depending on who you work with, your experience may be fantastic or terrible. Other cons: Culture of secrecy related to pay and bonuses (aka, disparity across the same position. I was told on more than one occasion to not share with anyone that I received a bonus.); No company provided cellphone (to get email access on your phone, which is very much necessary in this role, you’ll have to download several apps on your personal device that track all sorts of things); Lack of transparency in upcoming service model change; Very busy workload (not limited to Q4); A great deal of data entry required by Client Managers with limited/no support to complete; Benefits are below market (expensive and crummy plans); PTO is archaic (some branches hire in at a higher amount to attract talent); 401k company match is now given in Gallagher stock instead of regular $; 401k match is deposited once a year (i.e., if you leave employment mid-year, no match for you for the time in which you were employed that year).