Legal Department Structure: Companies Staff Corporate, Buy Trial Work

A legal department structure is a set of decisions about which legal work the company's own lawyers do and which work it sends to law firms. Sartori & Partners data give a market view of how companies are making those decisions. Between May and October 2026, 772 companies hired 953 lawyers out of law firms, and the practices those lawyers came from show what companies choose to keep inside. The clearest signal is corporate work: corporate lawyers were 33.2% of those hires, well above their 20.7% share of moves between firms. Litigators were the largest single group hired, yet slightly under their lateral share, while disputes and investigations made up 25.0% of the dated matters law firms advised on. This guide sets out the usual ways to organize a department, then uses those figures to show which functions to staff and which to buy.

The common model puts a general counsel at the top, reporting to the chief executive. A deputy general counsel runs the daily work and often leads one function as well. Beneath them sit teams by function: commercial and contracts, corporate and governance, litigation, employment, regulatory and compliance, privacy and data, and intellectual property. Compliance sometimes reports outside legal, to the board or a chief compliance officer, and privacy can sit with compliance or with technology.

Larger groups add a second axis. Each business unit gets its own lead counsel, who sits with that business and reports to the general counsel, while specialist teams stay central and serve every unit. Most large departments end up as a hybrid: generalists aligned to the business, specialists organized by function. Smaller companies run one generalist team and buy the rest. Whichever model you choose, the hires that fill it come mostly from law firms, and the figures show which practices companies draw on. Sartori & Partners counted 953 lawyers who left law firms for companies between May and October 2026, spread across 772 employers. Choose the model before the first hire, because it decides whether you recruit specialists or generalists.

Corporate & M&A featured in 33.2% of moves from law firms to companies, against 20.7% of moves between law firms, a gap of 12.5 points and 1.6 times the lateral share. No other practice is over-represented in-house by as many points. A lawyer can carry more than one practice, so these shares overlap, add to more than the whole and are never a split of the market. The in-house figures cover May to October 2026 and the lateral figures the 12 months to October, so the comparison is of shares, not counts.

Several practices barely differ between the two markets. Banking and finance featured in 13.1% of in-house hires against 13.9% of lateral moves, and employment and labor in 10.7% against 10.7%. Corporate stands out because corporate work inside a company never stops: board meetings, subsidiaries, shareholder matters, commercial contracts and a steady stream of smaller acquisitions and investments. An in-house corporate lawyer also runs the large deals, scoping the work, managing the outside firm and holding it to budget. For most companies the corporate and commercial bench is the core of the department, and the first hires after the general counsel belong there.

Litigation & Disputes featured in 37.7% of moves to companies, more than any other practice, against 39.9% of moves between firms, 2.2 points lower. The gap widens in the practices that run on courtroom volume. Product liability and torts featured in 4.1% of in-house hires against 6.8% of lateral moves; construction in 4.0% against 6.0%; real estate in 9.0% against 10.6%.

That pattern fits how companies use litigators. An in-house litigator rarely tries cases. The job is to manage a portfolio: pick the firm for each case, set strategy, decide when to settle, control spend and report exposure to the board. Trial teams, expert witnesses and the document work of mass claims stay with law firms. For the structure, that means a litigation manager, or a small disputes team in a company with many cases, rather than a trial bench. If your exposure is product claims or construction disputes, plan an outside panel from the start and staff inside only to run it.

The sharpest over-index is technology, data and privacy: 9.8% of in-house hires against 4.2% of lateral moves, 2.3 times the lateral share. Intellectual property follows at 12.9% against 7.4%, 1.7 times. Capital markets sits close to its lateral share, at 4.9% of in-house hires against 4.3%.

Privacy and product counsel advise on decisions the business makes every week: a new data use, a product launch, a vendor contract that moves customer data. That work is too frequent and too close to the product to buy by the hour. Intellectual property inside a company is mostly portfolio work: filings, licensing, brand protection and clearing new products. In the Sartori & Partners figures, companies hire both from firms in larger proportion than firms hire them from each other. A company that sells software, consumer brands or data-heavy services should treat privacy and intellectual property as standing functions with their own lead, not as matters to send out.

The other side of the structure is what companies buy. Law firms advised on 48,131 dated matters in the 12 months to October 2026. Capital markets made up 25.7% of them, disputes and investigations 25.0% and M&A 19.3%. Every other type was at or under the 3.8% of venture and growth rounds.

Set against the hiring figures, three patterns appear. Capital markets is the clearest function to buy: 25.7% of outside matters, but only 4.9% of in-house hires, because offerings come in bursts and need a specialist team that deals with regulators every day. Disputes are bought in volume even though litigators are the largest group hired inside, which confirms the manager model: the in-house lawyer chooses and supervises, the firm runs the case. M&A is both: corporate lawyers over-index inside, and M&A is still 19.3% of outside matters. The in-house team carries the deal flow; the firm brings the large transaction team. Budget for outside spend by these types, and build the internal roles to manage each of them.

Build the core around corporate and commercial work. Corporate lawyers were 33.2% of what companies hired from firms, and that bench handles the daily work that never leaves the building. Add one lawyer who owns litigation as a manager, not a trial team, and expect to buy most dispute work by matter. If the business runs on data, products or brands, give privacy and intellectual property their own lead inside. Keep capital markets outside unless the company issues often, and hold a governance or securities lawyer inside if it is listed.

Organize by function while the team is small, and add business-unit counsel once a unit's legal demand fills a full-time seat. Sartori & Partners data show 772 companies recruiting from law firms in six months, so the pool is shared widely. Write each role around the function it serves, and the hiring market will supply the corporate, privacy and intellectual property lawyers more readily than its lateral share would suggest.