John Flood has a website and a weblog called John Flood's Random Academic Thoughts, where there is a post with more information on the book.
I have often wondered what lawyers do myself - the book is about business lawyers rather than litigators, whose role is easier to understand. Just as people who come straight from translation studies can't usually translate, new lawyers can't usually act as lawyers, so I never found it out, although the firm in the book sounds very similar to the Jewish law firm where I did my articles in London, down to the arrangement of the offices. The text is rather dry on the surface, a summary of analysis, but amusing between the lines.
The main activity of lawyers is talking on the telephone with persons other than Tischmann lawyers (31.1%). If we add talking with other Tischmann lawyers by telephone the percentage rises to 23.5 percent. The second largest activity is talking face to face with other Tischmann lawyers (12%). Talking with Tischmann lawyers and others takes up 18.1 percent of lawyers' billable time. If we sum time spent at meetings outside the office (2.6%), office meetings (0.7%), telephoning and talking face to face, we find lawyers spend 53.9 percent of their chargeable time talking. Writing, however, takes up only 20.8 percent (16.3% - drafting; 4.5% - revising). ... Research is an activity mainly carried out by associates.
All the office staff are considered.
All the support staff had to log in and out during the day. If they were late, their salaries were docked. Because they perceived their salaries already low, many secretaries left after having their salaries reduced. Much of the office gossip turned on how much of a "bastard" the office manager was, and who was about to suffer his wrath next. Some of the secretaries were aggrieved at how they were treated by the office manager. They felt he conveniently forgot the many occasions when they came in during weekends to help their attorneys, when he decided to dock their pay for some infraction.
I'm looking forward to reading the rest. I think I first read John Flood on barristers' clerks, a mysterious species - here's a blog post on them.