Westfield Insurance | 32,653 followers on LinkedIn. Founded in 1848, Westfield is a global leader in property and casualty insurance, delivering superior risk insights and innovative solutions to customers through a diverse portfolio of insurance products. Westfield underwrites commercial, personal, surety, and specialty lines of coverage through a network of leading independent agents and brokers in the United States and specialty products through Lloyd’s of London Syndicate 1200. As a mutual insurance company with more than 3,000 employees, Westfield has revenues in excess of $4 billion and more than $10 billion in assets.