How to Review and Supervise Junior Lawyer Billing in Australia

Every partner and senior associate knows the pattern: you review a junior's billing entries before sending the invoice to the client, and you find entries that are too vague, too long, improperly described, or missing entirely. You fix them yourself because it is faster than explaining, and the cycle repeats next month.

This is not just an annoyance — it is a management failure that costs the firm money, slows junior development, and creates costs assessment risk. This guide covers how to build a billing supervision process that actually works.

Why Junior Billing Goes Wrong

Junior lawyers are not taught how to bill in law school. Most learn through trial and error in their first year of practice, absorbing whatever habits — good or bad — exist in their immediate team. The most common problems with junior billing entries include descriptions that are too vague ("Attended to various matters", "Research and drafting"), time that appears excessive for the task described, entries that are recorded days or weeks after the work was performed, failure to separate distinct tasks into separate entries, and confusion about what is billable and what is not.

These problems persist because most firms do not have a structured process for billing training or review. Partners correct entries in silence and never feed back the corrections to the junior.

Building a Billing Review Process

An effective billing review process has three elements: clear standards, regular review, and constructive feedback.

Clear Standards

Document your firm's billing standards in writing. This should cover the minimum level of detail expected in descriptions (with good and bad examples), which tasks require separate entries and which can be combined, how to record different types of work (conferences, correspondence, research, drafting, reviewing), time recording expectations (same-day recording, maximum delay), and the firm's approach to rounding and minimum charges.

Make this document part of every new lawyer's onboarding. It is not enough to hand it to them — walk through examples and have them bill a practice scenario before they start billing real work.

Regular Review

Review billing entries before they are invoiced, not after. Establish a weekly or fortnightly rhythm where the supervising lawyer reviews all unbilled time entries for their team. This catches problems early and creates a natural opportunity for feedback.

Focus your review on descriptions (are they specific and professional?), time allocation (does the time seem reasonable for the task?), completeness (are there days with no entries or matters with unexplained gaps?), and classification (is the work correctly attributed to the right matter and task type?).

Constructive Feedback

When you correct a billing entry, show the junior both the original and the corrected version. Explain why you made the change. A quick 5-minute conversation about why "Attendance at conference with client regarding settlement" is better than "Conference with client" builds billing skills that last a career.

Avoid doing corrections silently. If you consistently fix entries without feedback, the junior never learns, and you never stop doing the corrections.

Common Billing Mistakes to Watch For

Billing for Supervision Work

An important question: can you bill the client for the time you spend reviewing and correcting junior entries? The answer depends on the nature of the review. If you are reviewing a junior's substantive work product — such as reviewing a draft contract or checking a letter of advice — that review is billable as supervision. If you are merely correcting billing descriptions and time entries, that is an internal administrative function and should not be billed to the client.

The distinction matters because clients and costs assessors both watch for duplicated work between juniors and seniors. If the junior records 2 hours of research and the senior records 0.5 hours of "reviewing research", that is generally acceptable supervision. If the senior then records 1.5 hours of "further research on same topic", the client is entitled to ask why the junior's research needed to be substantially redone.

Training Juniors on Billing

The most effective approach to junior billing training combines three elements: a written billing guide with examples specific to your practice area, a mentoring relationship where the supervising lawyer reviews entries weekly for the first six months, and access to tools that generate high-quality descriptions as a model for the junior to learn from.

AI billing tools are particularly useful in this last category. When a junior can compare their manually written description with an AI-generated description of the same work, they quickly see the level of detail and professional language expected. Over time, their manual entries improve to match the standard.

Frequently Asked Questions

How often should I review junior billing entries?

Weekly during the first six months, fortnightly after that. Always review before invoicing. Some firms review all entries regardless of seniority before major invoices are sent — this is good practice even if it requires more time.

Should I write off junior time that seems excessive?

Sometimes. If a junior took 4 hours on a task that should have taken 1 hour, writing down the time is appropriate — you should not charge the client for the junior's learning curve. However, have a conversation with the junior about why the time was excessive and how to approach the task more efficiently next time.

How do I handle a junior who consistently fails to record time?

Treat it as a performance issue. Explain the direct revenue impact (unrecorded time is lost revenue), set clear expectations (same-day recording, no exceptions), and follow up weekly. If the problem persists after clear expectations and support, it becomes a formal performance management matter.

Last updated: April 2026. This guide is for general informational purposes and does not constitute legal advice.