Ventajas
By far the industry leader in their field from a salesperson/marketing perspective. Strong financials and secure employment if you're a "doer." Line positions gives one plenty of opportunity to learn and grow professionally.
Desventajas
Hierarchical with good 'ol boy network that turns over every 5 - 7 years anyway. Spits out great people into WEX, EFS, Fleet One, and other competitors over and over year after year. Often has trouble recognizing ambitious, hard workers. Execs eventually get canned so it makes it bitter-sweet. Slow to recognize and act on market potential for even core strengths (e.g. healthcare and international payments) The negatives one can hear about working at Comdata are usually from entry-level customer service ex-employees, not mid-level and up. If you're attractive or an athlete, you should have no problem getting a job in sales. If you're unattractive, they'll find you a cubicle and headset and let you come out for a pizza party now and again.