I've found as a lawyer that I use historical analysis to understand and advise on proposed client deals and decisions.
Like business law, history involves gathering evidence principally documentation, putting it into order usually chronological, and letting examination produce results.
In business law this approach helps study proposed business and legal relationships. In history relationships can be between ideas, actors, forces and responses. In business law they involve entities, rights, obligations, and prohibitions. Same, same but different.
I read a lot of law and a lot of history, they inform each other. One of my favourite sources is the Conversations with History series on YouTube from the University of California, Berkley. It has a great format, a scholarly interview for an hour or more usually with a historian who has written a recent book.