Imputation and Screening a Lateral Hire
A conflict held by one lawyer is treated as a conflict of every lawyer in the firm. The model rule allows a firm to keep a matter by walling off an incoming lawyer, but only on conditions, and a number of states have never accepted the mechanism at all.
The rule in short
Lawyers associated in a firm are generally treated as one lawyer for conflicts purposes, so a disqualifying interest held by any of them disqualifies all. The model rule creates two escapes: a conflict personal to a lawyer that poses no significant risk to the representation is not imputed, and a firm may keep a matter conflicted by a lateral hire if that lawyer is timely screened, takes no part of the fee, and the former client receives prompt written notice.
Imputation is the rule that turns an individual disability into an institutional one. Lawyers associated in a firm are treated as though they were a single lawyer, so a matter one of them could not take, none of them can take. Almost every practical conflicts question in a firm of any size is really a question about how far that attribution extends and what will interrupt it.
The reach of the general rule
The general rule is stated broadly and then narrowed. While lawyers are associated in a firm, none of them may knowingly represent a client when any one of them practicing alone would be prohibited from doing so by the rules on current-client conflicts or former-client conflicts. The term firm is defined functionally rather than formally, and it can reach lawyers in a legal services organization or the legal department of an entity.
The first exception is for conflicts that are personal to a lawyer. Where the prohibition arises from the lawyer's own interest and does not present a significant risk of materially limiting the representation of the client by the remaining lawyers, it is not imputed. A lawyer with a strong personal objection to a client's position may be walled off from that work without disabling colleagues; a lawyer with a financial stake in the outcome usually cannot, because that stake can affect the firm.
Screening a lateral hire
The second exception is the one that shapes hiring. Where a lawyer arrives from a prior firm carrying a disqualifying former-client conflict, the new firm may keep the affected matter if three conditions are met. The screen must be timely, meaning erected when the lawyer arrives rather than when a motion is filed. The screened lawyer must be apportioned no part of the fee from the matter. And written notice must be given promptly to the affected former client.
The notice provision has more content than firms expect. It must describe the screening procedures employed, state the firm's and the screened lawyer's obligation to comply with the rules, offer to respond to written inquiries about the screen, and give a statement of compliance at the former client's reasonable request and on termination of the screening procedures. That is a continuing obligation, not a single letter filed and forgotten.
Lateral screening without former-client consent is not available everywhere. Several states have declined to adopt this provision, or adopted it with additional conditions such as consent from the former client or a limitation to lawyers who had no substantial involvement in the prior matter. A firm with offices in more than one state cannot assume a screen valid in one will be respected in another, and the choice-of-law rule governing disciplinary authority is its own inquiry.
What a functioning screen contains
Screened is a defined term: the isolation of a lawyer from participation in a matter through the timely imposition of procedures within a firm that are reasonably adequate under the circumstances to protect information that the isolated lawyer is obligated to protect. Reasonably adequate is doing the work, and what suffices scales with the firm and the matter.
The recurring failure is electronic rather than physical. Document management systems, time and billing records, conflicts databases and shared drives all leak, and a screen described in a memorandum but not implemented in the access controls is a screen in name only. Firms that succeed on this point restrict the matter at the system level first and paper the arrangement second.
Two further details are commonly neglected. The screened lawyer's own conduct matters as much as the firm's architecture, and a single conversation in a corridor undoes the arrangement regardless of what the access controls say. And support staff are inside the screen, not outside it: a secretary or paralegal who moved with the lateral lawyer carries the same information and must be isolated on the same terms, a point the definition of a firm makes plain but that onboarding checklists routinely omit.
| Source of the conflict | Imputed to the firm | Screen permitted under the model rules |
|---|---|---|
| Current-client conflict under the concurrent-conflicts rule | Yes | No; client consent is the only route |
| Former-client conflict carried in by a lateral hire | Yes, unless screened | Yes, with no fee share and prompt written notice |
| Personal interest of one lawyer, no risk to the representation | No | Not required, though firms often screen anyway |
| Information from a prospective client who never retained the firm | Yes, unless screened | Yes, with no fee share and written notice |
| Former judge, arbitrator or other neutral joining the firm | Yes, unless screened | Yes, with no fee share and written notice to the parties and tribunal |
When the attribution stops
Imputation is not permanent. When a lawyer leaves a firm, the firm is no longer prohibited from acting adversely to a client that lawyer represented, unless the new matter is the same as or substantially related to the old one and a lawyer still at the firm holds information protected by the confidentiality and former-client rules. The second condition is the one that decides real cases, because associates and staff who worked on the old matter often remain.
That inquiry runs on the same footing as the substantial relationship test for former clients, and it is resolved by looking at the scope of the earlier engagement rather than by asking who remembers what. Where the earlier work was narrow and its participants have all left, the disability genuinely ends.
Intake, records and the cost of getting it wrong
Screening is an operational discipline before it is a legal argument. The practical sequence begins during recruitment: a candidate provides a list of prior clients and matters at a level of detail that does not itself breach confidentiality, the firm runs it against active and closed matters, and any disabling overlap is resolved before an offer is accepted. Conflicts that surface later are handled under the consent procedures for current-client conflicts, which are frequently unavailable at that stage.
A firm that cannot cure an imputed conflict has to leave the matter, and the exit carries its own duties, from tribunal permission to the return of files and unearned fees under the rule on terminating a representation. Supervisory responsibility runs in parallel: partners and supervising lawyers are answerable for firm systems, and the same principle that makes a firm responsible for the conduct of non-lawyer staff makes it responsible for the integrity of a screen that paralegals and secretaries must observe alongside lawyers.
Points to carry away
- Lawyers associated in a firm are treated as a single lawyer when conflicts are assessed.
- A conflict personal to one lawyer is not imputed where it poses no significant risk of materially limiting the representation.
- The model rule permits screening of a lateral hire whose former client conflict would otherwise disqualify the firm.
- A screen must be timely, the screened lawyer must receive no part of the fee, and written notice must go to the former client.
- Imputation ends when the conflicted lawyer leaves, unless a remaining lawyer holds protected information.
- Several states reject or restrict lateral screening, so the model rule cannot be assumed to be the local rule.
Questions readers ask
Does a screen have to be in place before the lateral lawyer starts work?
Timeliness is measured against the moment the risk arises, which is when the incoming lawyer joins or, in some situations, when the firm learns that a conflict exists. A screen erected after the lawyer has already discussed the matter with the team, sat in a case meeting, or accessed the electronic file is not timely, and the defect cannot be cured by putting the screen up afterward. Firms that treat conflicts clearance as part of the offer process rather than the onboarding process avoid the problem.
What does a screen consist of in practice?
The core elements are physical and electronic separation from the matter, a written instruction to the screened lawyer and to everyone working on the file, restriction of the lawyer's access to documents and case management systems, and a bar on any discussion of the matter. Firms commonly add written acknowledgments from each affected person and periodic certifications. The apportionment of the fee matters too: the screened lawyer must receive no part of the fee from the matter, though ordinary salary and a partnership share not tied to that matter are permitted.
Does imputation follow a lawyer who leaves the firm?
It does not follow the departing lawyer's old firm indefinitely. Once a lawyer has left, the former firm is not barred from a matter adverse to a client the departed lawyer represented, unless the matter is the same or substantially related and a lawyer remaining at the firm holds protected information about it. The mirror image also holds: the departing lawyer carries a personal disability into the new firm, and whether that disability spreads to the new firm depends on whether screening is permitted where the firm practices.
Sources
- ABA Model Rules of Professional Conduct — Rule 1.10, Imputation of Conflicts of Interest: General RuleThe imputation rule, the personal interest exception and the lateral screening provision.
- ABA Model Rules — Comment on Rule 1.10Explains what a firm is, when imputation ends, and the conditions attached to a screen.
- ABA Model Rules — Rule 1.0, TerminologyDefines screened, firm and confirmed in writing, all of which the imputation rule depends on.
- ABA Model Rules — Rule 1.9, Duties to Former ClientsThe underlying conflict that lateral screening is designed to contain.
- ABA Model Rules — Rule 1.18, Duties to a Prospective ClientA separate screening route for conflicts arising from consultations that never became representations.
- ABA Model Rules — Rule 1.12, Former Judge, Arbitrator, Mediator or Other Third-Party NeutralThe long-standing screening provision for neutrals, which predates screening for lateral hires.
- State Bar of California — Rules of Professional Conduct, Current RulesAn adopted state text whose treatment of imputation and screening differs from the model.
Justice Partners Journal is a publication, not a law firm. This article states general rules and cites its sources; it is not advice about any particular case, and the law differs by state and changes over time.
