Pluspunten
The company doesn't like to let people go, so job security is great as long as you're performing adequately. Management listens to employees and takes their input seriously. Good training, both in company and out. Management is willing to adjust/expand job descriptions if employees want to take on something new. Depending on the teams you work with, hours and scheduling can be extremely flexible.
Minpunten
Pay! The company is very tight-fisted and doesn't pay non-commissioned employees what they're worth- even though the company sends out emails about how the company is doing fantastically well each quarter, raises are non-existent or don't even keep up with inflation. Bureaucracy. There's enough layers of management to be confusing and allow for enough shifting of blame/responsibility that things get lost in the shuffle. Unless you want to be a broker, there's not much opportunity for career advancement for assistants. Overly formal/old-fashioned environment (dress code, attitudes of management and brokers, etc.).