Since our founding in 1984, our firm has conducted dozens of COO searches for the nation’s leading law firms. Over that time, one truth has become clear: the search doesn’t end when the candidate accepts the position. Running a large law firm today is complex. The modern COO must lead international management teams, safeguard client data, ensure operational resiliency, and navigate a dynamic regulatory and political landscape.
When a law firm hires a new COO, the first 100 days are critical to establishing credibility, building trust, and laying the foundation for long-term success. We asked four sitting COOs at Am Law 100 firms to share advice for law firm chairs and managing partners on how to set a new COO up for success. All these COOs were highly complimentary of their chairs for a smooth introduction and orientation to their firms.
Their collective wisdom can be distilled into six key actions.
Signal Visible Support from Day One
Every COO we spoke with emphasized how important it is that chair and firm leadership visibly endorse the new hire—both publicly and privately.
Dave Boden, COO of Haynes Boone, described how his chairman’s strong support gave him immediate credibility among partners and allowed him to do his job effectively. Boden suggests that a chairman’s support should show up in firmwide announcements, an introduction at partners’ meetings, and ideally a personal message (video or in person) reinforcing the COO’s qualifications and the chair’s confidence.
Create a Structured, Thoughtful Orientation
Don’t leave onboarding to chance.
Victor Nuñez of Cooley described a multi-week orientation program that included office visits, participation in board meetings, and scheduled introductions to key partners and business professionals. That blueprint was developed jointly by HR and senior leadership to make sure no relationship was overlooked. Whether formalized or not, the early months should map out key meetings, topical briefings, and office visits.
Facilitate Relationship-Building Across the Firm
Speed matters in establishing trust.
Brian Gross of Morrison & Foerster emphasized that his earlier interviews across the firm gave him insight into the partnership’s mindset even before day one. For firms that ran a leaner search, replicate that exposure after the hire: identify the 20–30 partners whose support is critical and make sure the COO meets them early, ideally in person. As part of that, the chair can accompany the COO on initial office visits or roadshows to accelerate buy-in. It is equally important for a new COO to meet not only their direct reports, but also the team underneath their direct reports. As one COO commented, “It’s important to meet the people who are doing a lot of the hard work.”
Set Communication Rhythms and Clear Boundaries
Agreeing on communication protocols from the start is essential.
Weekly one-on-ones with the chair, informal check-ins, and periodic strategy dinners help keep the COO plugged into firm leadership. Equally important: clarifying decision-making authority and escalation protocols. For example, Rob Brown of Sheppard, Mullin, Richter & Hampton made the point that a clear mutual understanding between the COO or Executive Director and the Chair/Managing Partner on where the Chair wants to be involved in joint decisions very much helps to build mutual trust and understanding. The absence of that clear framework can slow down critical decision-making and create organizational confusion.
Balance Patience with Momentum
Early listening is critical.
Several COOs described their first months as a “honeymoon period” spent observing, asking questions, and building informal influence. Boden, for instance, used that time to gather observations and perspectives from his chairman, laying the groundwork for future initiatives. That said, some COOs cautioned that waiting too long may not be ideal—early personnel moves, or other changes might be necessary. The key is to pace change carefully and communicate the rationale clearly to partners.
Include Coaching and Team Building
Many firms, especially those hiring a first-time COO or someone from outside the legal industry, find it beneficial to engage an experienced coach. A coach who has held a COO role within a law firm can help the new leader grasp the nuanced dynamics of firm operations and avoid common pitfalls.
In our work, we often pair coaching with a facilitated team-building session for the COO and their direct reports. Using Personalysis, a well-known personality-based assessment tool, we explore how each team member makes decisions, communicates, and contributes. From these results, we produce a team profile that helps everyone understand how to collaborate more effectively, providing the COO with early insights into leading their team. Direct reports frequently tell us this exercise helps them adapt more quickly and fosters early trust.
The Payoff
When onboarding is handled intentionally, the results speak for themselves: stronger alignment between leadership and partners, smoother decision-making, and a COO freed to focus on strategy rather than credibility-building. As one COO put it, “If you don’t have the partnerships, confidence, and solid channels of communication, you’re crippled from the start.”
For firms preparing to welcome a new COO, taking these six steps—visible support, structured orientation, relationship-building, clear communication, paced change, and coaching/team-building—can transform a promise-filled hire into a transformational leader.