You're about to sign a lateral partner who brings a seven-figure book of business. She's given notice at her current firm and expects to start in three weeks. But before you send the offer letter, you need to run a lateral hire conflict check—and it needs to be thorough enough to prevent a malpractice claim or client loss six months down the road.
A lateral hire conflict check is a systematic review of all matters, clients, and adverse parties associated with an incoming attorney to identify potential conflicts of interest before they join your firm. This process should begin the moment you receive a candidate's matter list and must be completed before extending a final offer, as conflicts discovered after hiring can result in client disqualification, lost revenue, or ethics violations.
The stakes are higher than a standard client intake conflict check. When an attorney moves firms, they bring imputed conflicts from every matter their former firm handled during their tenure, plus personal conflicts from matters they worked on directly. Miss a conflict, and you might have to withdraw from a major case or turn away the new hire's most valuable clients.
Why Lateral Hire Conflicts Are More Complex Than Standard Intake Checks
Standard conflict checks examine whether a prospective client's interests are adverse to current or former clients. Lateral hire checks operate on a different scale entirely.
When an attorney joins your firm, Rule 1.10 of the ABA Model Rules of Professional Conduct imputes their conflicts to every lawyer in your practice. This means:
- Every matter the lateral attorney personally worked on at their previous firm creates a personal conflict
- Every matter handled by their former firm during their employment creates a potential imputed conflict
- Every adverse party from those matters becomes a screening target
- Former clients may have expectations about continued representation or confidentiality
A partner who spent eight years at a 200-attorney firm could bring thousands of conflict records. An associate who worked in BigLaw litigation for three years might have touchedundefinedcases with hundreds of adverse parties and co-defendants.
The business impact is immediate. If your firm currently represents Company X in litigation, and your lateral hire previously defended Company X's competitor in a related matter, you may need to withdraw from the existing case or decline the lateral hire. Either choice costs money.
Gathering the Lateral Candidate's Matter Information
Before you can check for conflicts, you need a complete picture of the candidate's work history. This is harder than it sounds.
Request a comprehensive matter list from the candidate that includes:
- Every matter they personally worked on in the past seven to ten years
- Client names and any aliases or related entities
- Adverse parties, co-defendants, and other parties with interests opposed to the client
- Matter descriptions detailed enough to identify the subject matter and scope
- Dates of representation (start and close dates when available)
- Their role in each matter and level of involvement
Most lateral candidates will pull this information from their current firm's conflicts system. The quality varies wildly. Large firms with robust conflicts infrastructure can generate detailed reports. Smaller firms may provide a handwritten list or incomplete spreadsheets.
Push for completeness. A candidate who "doesn't remember" matters from four years ago or provides only client names without adverse parties is creating liability for both of you. Set the expectation early: no complete matter list, no offer.
For senior partners, also request:
- Matters supervised but not personally worked on
- Business development relationships and pitches that didn't convert
- Board memberships and volunteer positions
- Family relationships that might create conflicts (spouse's employer, siblings' businesses)
Document everything in writing. Email is fine; the point is to create a record that the candidate was asked and what they provided.
Running the Conflicts Search Against Your System
Once you have the candidate's matter list, it's time to search your firm's conflicts database. This is where most firms discover their conflicts system isn't as thorough as they thought.
Run searches for:
- Client names - Exact matches and variations (IBM vs. International Business Machines, common abbreviations)
- Adverse parties - Anyone opposed to the candidate's former clients
- Matter descriptions - Keyword searches for overlapping subject matter
- Related entities - Parent companies, subsidiaries, affiliates
The goal is to identify three types of issues:
Direct conflicts: Your firm currently represents or previously represented someone adverse to the lateral's former clients. This is the clearest disqualification scenario.
Positional conflicts: Your firm has taken legal positions in cases that contradict positions the lateral advocated for former clients. These are fact-dependent and may be waivable.
Substantial relationship conflicts: The lateral's work at their old firm involved matters substantially related to cases your firm now handles, creating a risk that confidential information could be used adversely.
Document every potential hit. Don't dismiss marginal matches at this stage—you'll evaluate them in the next phase. A client name that appears in both systems needs investigation even if the matter types seem unrelated.
Most firms find 10-50 potential conflict flags for a senior lateral hire. This doesn't mean you haveundefinedactual conflicts; it means you haveundefineditems requiring analysis.
Analyzing and Resolving Identified Conflicts
Now comes the judgment phase. For each flagged matter, determine whether it represents a true conflict under your jurisdiction's ethics rules.
Ask these questions:
Is the conflict current or former? Current matters create per se conflicts in most jurisdictions. Former matters require substantial relationship analysis.
Are the clients directly adverse? Direct adversity in the same or substantially related matter is usually disqualifying. Adversity in unrelated matters may not be.
What confidential information did the lateral receive? If the lateral had access to client confidences that could be used against that client in your firm's matter, you have a problem. If their involvement was minimal or the matters are unrelated, screening may be sufficient.
Can we get informed consent? If all affected clients (both former clients of the lateral and current clients of your firm) consent after full disclosure, many conflicts can be waived. Getting that consent before the hire is finalized is crucial.
For each conflict, you have four options:
- Decline the lateral hire - Appropriate when conflicts threaten major client relationships or critical matters
- Withdraw from conflicted matters - Possible if the affected matters are small relative to the value the lateral brings
- Screen the lateral attorney - Creates an ethical wall preventing the lateral from accessing conflicted matters; effectiveness varies by jurisdiction
- Obtain informed consent waivers - Requires disclosure to all affected parties and written consent
Document your analysis and resolution for every identified conflict. If you're sued for malpractice or face a disqualification motion three years from now, you'll need to show you conducted reasonable due diligence.
Managing lateral hire conflicts across multiple offices and thousands of historical matters demands purpose-built software. ConflictsCheck automates the search process, flags both direct and imputed conflicts, and maintains audit trails of your analysis and resolution decisions—turning a week-long manual review into a process you can complete in hours.
Creating an Ethical Screen for the Lateral Attorney
When you can't eliminate a conflict but want to proceed with the hire, ethical screening (also called an ethical wall or information barrier) may provide a solution—if your jurisdiction permits it.
Screening requirements vary by state, but generally include:
- Written notice to affected clients describing the screening procedures
- Physical and technological barriers preventing the screened attorney from accessing conflicted files
- Prohibition on the screened attorney discussing the matter with firm colleagues
- No sharing of fees from the conflicted matter with the screened attorney
- Periodic certifications that the screen remains effective
Set up screens before the lateral's start date. Configure document management systems to block access, update matter assignments in your practice management software, and brief your team on the screening protocols.
Screens are not foolproof. They fail when attorneys discuss matters in hallways, when screened lawyers inadvertently receive emails about conflicted cases, or when small office layouts make information isolation impossible. Courts scrutinize screens carefully and may disqualify your firm if the screen appears inadequate.
Some jurisdictions don't recognize screens for lateral attorneys at all, particularly for partners moving between firms. Check your state's ethics rules—what works in New York may not work in California.
Timing Your Conflict Check in the Hiring Process
When you run the lateral hire conflict check matters as much as how you run it.
Too early - Before you have a serious candidate - wastes time on people who won't accept your offer
Too late - After you've extended an offer or announced the hire publicly - creates untenable situations where you must rescind offers or explain to clients why you're withdrawing from their matters
The right timing: after preliminary interviews confirm mutual interest but before you extend a formal offer.
Here's a realistic timeline for a lateral partner hire:
- Week 1-2: Initial interviews and mutual interest established
- Week 3: Request comprehensive matter list from candidate
- Week 4: Receive matter list, run conflicts searches
- Week 5: Analyze flagged conflicts, consult with affected partners and clients
- Week 6: Resolve conflicts through waivers, screens, or matter withdrawals
- Week 7: Extend formal offer contingent on final conflict clearance
- Week 8-9: Candidate gives notice at current firm
- Week 10-12: New attorney starts
For associates or junior partners with shorter work histories, compress this to 2-4 weeks. For senior partners or practice group moves involving multiple attorneys, extend it to 8-12 weeks.
Never announce a lateral hire before completing conflict checks. Law firm press releases claiming "Partner X joins from Firm Y" that must be walked back due to undiscovered conflicts damage your reputation with clients, referral sources, and the candidate.
Maintaining Records and Updating Your Conflicts System
The lateral attorney's historical matters need to enter your firm's conflicts database permanently. This isn't optional—it's the only way to check future conflicts against their work history.
Import the following records:
- All clients the lateral represented at previous firms (with appropriate date ranges)
- All adverse parties from those matters
- Matter descriptions and subject matter tags
- Start and end dates of representation
- Notation indicating these are imputed conflicts from a lateral hire
Some conflicts systems struggle with historical records from other firms. They're designed to track your firm's current and past matters, not to import a lateral's decade-long work history from multiple employers. This creates gaps that will cause problems later.
Update your system immediately when the lateral starts—not six months later when it feels less urgent. Every day you operate without their conflicts loaded is a day you might accidentally conflict them out or take on an adverse matter.
Also document the conflicts analysis itself:
- Which potential conflicts you identified
- How you resolved each one (screen, waiver, withdrawal, or determination of no conflict)
- Correspondence with clients regarding waivers
- Screening procedures implemented
This documentation protects you if a conflict surfaces later and someone questions your diligence.
Frequently Asked Questions
How far back should a lateral hire conflict check go?
Most firms check seven to ten years of work history as a baseline, though ethics rules technically require checking all former client representations regardless of age. Practical limitations usually focus intensive review on the past decade, with broader searches for senior partners who have been practicing longer. Older matters create lower risk as the information becomes stale and the substantial relationship test weakens over time.
Can we hire a lateral attorney if conflicts exist with one of our major clients?
Yes, but only with informed written consent from that client or by withdrawing from conflicted matters before the hire. If your major client refuses to consent and the conflict is substantial, you face a business decision: decline the lateral hire or lose the existing client relationship. Most firms prioritize established client relationships over prospective laterals unless the hire brings exceptional strategic value.
What is imputed disqualification and how does it affect lateral hires?
Imputed disqualification means that when one attorney in a firm has a conflict of interest, that conflict is attributed to every attorney in the firm under Rule 1.10. For lateral hires, conflicts from their previous firm are imputed to them, and upon joining your firm, those conflicts become imputed to all your attorneys. This is why a single lateral partner can create conflicts affecting dozens of your existing matters.
Do we need to check conflicts for staff and paralegals who move firms?
Yes, though the analysis differs slightly. Non-lawyer staff can possess client confidential information and create conflicts, particularly if they worked extensively on specific matters. Most firms run abbreviated conflict checks for senior paralegals and legal assistants, focusing on matters they worked on directly rather than all firm matters during their tenure. Document the check and implement screens if needed.
How do we handle conflicts when hiring an entire practice group?
Practice group moves require coordinated conflict checking for all incoming attorneys simultaneously, as their conflicts compound. Run each attorney's matter list through your system, then analyze the combined conflict exposure. Expect this process to take 6-12 weeks for groups of three or more attorneys. Consider phased hiring if conflicts are manageable for some group members but not others, though this risks losing the entire group if key members can't join.
Getting Lateral Conflicts Right From the Start
The cost of a missed lateral hire conflict check extends beyond ethics violations. You risk malpractice claims, client departures, disqualification motions that embarrass you in court, and the loss of a promising attorney whose hiring turned into a liability nightmare.
The firms that handle lateral conflicts well treat them as deal-breakers worthy of serious due diligence, not administrative checkboxes. They allocate sufficient time in the hiring process, demand complete information from candidates, and make difficult decisions when conflicts threaten client relationships.
Start your lateral hire conflict check early, document thoroughly, and resolve every identified issue before the new attorney walks through your door. The three weeks you spend on careful conflict analysis now prevents the three-year ethics investigation you'd face if you skip it.