Salomons was one of the founders and directors of the Employers' Liability Assurance Corporation Limited in 1880. He identified the potential market for employers' liability insurance which had arisen as a consequence of the
Employers' Liability Act 1880. After Salomons' death in 1915, the then director of the Corporation commented, "[Salomons] was the founder of the Corporation and one of the original Directors, and through his great financial ability helped us to steer through many shoals which confronted us at the commencement of our career as a company." Together with city financiers
Jabez Balfour and
Sir John Pender, Salomons founded the investment
underwriting firm the
Trustees, Executors and Securities Insurance Corporation, Limited in December 1887. ==Purchase and gift of Box Hill==