Fee Earner Delegation Challenges at Detailed Assessment

The level of fee earner undertaking work is a central issue in paying party costs disputes. Even where time has been reasonably incurred, the court will consider whether the work was carried out at the appropriate grade and whether proper delegation was applied. Challenges based on delegation frequently lead to substantial reductions at detailed assessment.

We act for paying parties challenging excessive bills, including delegation and grade disputes at detailed assessment.

Why Delegation Matters

The court expects litigation to be conducted efficiently and at proportionate cost. Routine tasks carried out by senior fee earners, multiple lawyers attending the same event, or inadequate supervision structures can all justify reductions.

Delegation is therefore closely linked to:

• proportionality

• Guideline Hourly Rates

• duplication of work

• necessity of attendance

These issues commonly form part of Points of Dispute.

The Judicial Approach to Grade and Role

The court assesses not only whether work was done, but who should reasonably have carried it out. Tasks such as routine correspondence, document review, and procedural steps are rarely justified at partner or senior associate level unless supported by clear evidence.

Where the grade claimed does not match the complexity of the task, reductions are likely even if the hourly rate itself falls within Guideline Hourly Rates.

Duplication of Fee Earners

Multiple fee earners attending conferences, hearings, or internal meetings is a common source of challenge. Paying parties will examine:

• whether each attendee had a defined role

• whether the attendance advanced the case

• whether a single fee earner would have been sufficient

Unjustified duplication frequently results in disallowance of time or downgrading to a lower grade.

Delegation and Proportionality

Poor delegation is a key driver of disproportionate costs. Where the level of work and the grades deployed are out of alignment with the value and complexity of the claim, the court may apply both line-by-line reductions and global proportionality adjustments.

This creates a direct link between delegation challenges and proportionality arguments.

Authorisation and Recoverability of Fee Earner Time

The status of the fee earner carrying out the work is also relevant to recoverability. In Mazur v Charles Russell Speechlys LLP [2025], the High Court confirmed that the conduct of litigation is a reserved legal activity which may only be carried out by a person who is individually authorised or exempt. Supervision by a solicitor is not sufficient where the individual is, in substance, conducting the litigation.

For costs purposes, this creates a potential challenge where:

• work said to involve the conduct of litigation is carried out by an unauthorised fee earner

• statements of case or formal steps are signed by someone without practising rights

• responsibility for litigation decisions rests with a person not entitled to conduct litigation

In such cases, paying parties may argue that the work is not recoverable as solicitor’s costs or should be allowed only at a reduced level, subject to recoverability principles.

The issue is one of substance rather than job title. The court will consider who exercised professional judgment and who had responsibility for the conduct of the litigation.

Evidence Required to Justify Senior Involvement

Receiving parties seeking to justify higher-grade work must demonstrate:

• complexity requiring specialist input

• strategic decisions made by senior fee earners

• supervision structures that added value

• tasks that could not reasonably be delegated

Absent such evidence, the court is likely to allow time only at the appropriate lower grade.

Commercial Impact for Paying Parties

Delegation challenges are particularly effective in high-volume litigation where partner-heavy billing structures are common. Early identification of grade mismatches improves negotiation leverage and reduces exposure before a detailed assessment hearing.

This is especially relevant for local authorities, insurers, and defendant teams managing multiple costs claims.

Key Takeaways

• The court assesses who did the work, not just whether it was done

• Routine tasks at senior grade are vulnerable to reduction

• Duplication of attendance is frequently disallowed

• Mazur creates recoverability challenges where unauthorised persons conduct litigation

• Delegation arguments support proportionality reductions