Pros
There are some amazing people working for this company. People I enjoy seeing and collaborating with every day. MMC offers a large suite of benefits, though employee contributions are high. Decent PTO allotment.
Cons
Management, from the top all the way down, is a complete disaster. When you can actually get in touch with them or get them to call you back, they're typically dismissive and offer you empty promises. They have no interest in you or your career development. On that note, there really is no opportunity for growth with this company. Be prepared to stay in the same role for your entire career here and receive minimal to no merit increase or bonuses. Work life balance is abysmal, and with the continued flood of people leaving the company this has only gotten worse. Rather than hire new, competent employees they will either just shift the work to a remaining employee (with no adjustment to compensation) or will take months to fill the position, but refuse to pay someone who's qualified enough to perform well in the position. While MMC touts being family friendly and caring about their employees, in my 5+ years experience there I haven't seen that to be the case. More than anything this place has the feel of a good old "boys' club." Sales is where all the awards and recognition are directed, while the rest of the staff is ignored and overworked.