Pros
Financially stable, good people at the field level who are doing the work with the agents (underwriters, operations, claim). Small commercial is a well oiled machine and I would recommend working in that department. I would not recommend working in their middle market department though.
Cons
Specifically speaking on middle market (Not small commercial or life, etc.), The Hartford changes it's appetite far too often on commercial middle market business (gen ind, construction, tech, etc), to the point where agents consider them unreliable and it makes it difficult to write business in many cases, or play on the accounts they say they want to (but are ultimately afraid of, or don't have the upper management knowledge to understand). For an underwriter, The Hartford has by far the least authority of any carrier, which contributes to underwriting difficulty. Despite signing contracts with remote employees countrywide, they are now forcing them to come back into the office, proving they don't actually care about employees, their family situations, or the financial burden they will then place upon them as a result. Whether it is agent facing, or employee facing, they may not be able to be trusted. The Hartford talks a lot about DE&I, yet it rings hollow given their recent actions which disproportionally affect parents, women and minorities.