Every firm that handles litigation or investigations has a version of the same story. A discovery request comes in for 8,000 pages, maybe 20,000 on a bigger matter, and someone has to go through every single page looking for privileged communications, personal data, and anything else that can’t leave the building unredacted. That someone is usually a first- or second-year associate, and that work is usually billed at a rate the client resists paying in full.

The problem isn’t that redaction is hard. It’s that redaction is slow, repetitive, and priced like expert judgment when most of it is pattern matching. If you run a firm doing $1M to $25M in revenue, this is one of the quieter drains on your margin, and it rarely shows up as a single line item. It shows up as write-offs, late invoices, and associates who bill 1,400 hours a year instead of 1,800.

What manual redaction actually costs

Start with the math your billing partner already half-knows but hasn’t put on paper.

A typical first-pass privilege and PII review runs somewhere between 40 and 80 pages per hour for a careful associate, depending on document density and how many exhibit types are mixed into the batch. Emails with attachments slow things down. Financial records with account numbers slow things down more. On a 10,000-page production, that’s 125 to 250 hours of associate time before the batch even gets to a senior reviewer for quality control.

At $200 to $400 per hour of associate time, a single mid-size discovery matter can carry $25,000 to $100,000 in redaction labor alone, and that’s before you count the second pass, the privilege log drafting, and the inevitable re-review when opposing counsel flags something missed. Firms in our network doing this work at scale tell us the real number, once you include supervision and rework, tends to land 20-30% higher than the initial estimate.

Now multiply that by however many active discovery matters your firm runs in a year. For a firm this size, we usually see this category of work contributing somewhere in the $80,000 to $250,000 range in annual cost that clients either won’t pay for outright or that eats associate hours that should be going toward higher-value, billable strategy work. That’s the leakage band worth putting a number on for your own firm, not a generic industry average.

Where the hours actually go

If you’ve never mapped this out task by task, it’s worth doing once, because the breakdown explains why this keeps happening even at firms with strong review discipline.

First-pass privilege screening. An associate reads every document to determine if it touches attorney-client communication, work product, or joint defense material. This is judgment work, but a large share of it is recognizable pattern: sender domains, subject lines, distribution lists that include outside counsel.

PII and confidential data scrubbing. Social security numbers, account numbers, medical record numbers, minor children’s names. This part is closer to search-and-flag than legal judgment, but it still consumes associate hours because the risk of a miss is high and nobody wants to hand it to a paralegal without oversight.

Redaction application and Bates stamping. Manually applying redaction boxes, verifying they didn’t shift during export, and stamping pages in sequence. Mechanical, tedious, and a common source of production errors when done under deadline pressure.

Privilege log drafting. For every redacted or withheld document, someone has to write a log entry that’s specific enough to satisfy the rules but not so specific it waives the privilege it’s protecting. This is genuinely skilled work, and it’s the part of the process that actually deserves associate-level billing.

Only that last piece requires the judgment a $300-per-hour associate brings to the table. Everything above it is a candidate for a first pass that doesn’t need a law degree to execute, just needs a law degree to check.

What an AI-assisted first pass actually looks like

This is where the Document Review Agent comes in, and it’s worth being specific about what it does rather than waving at “automation.”

The agent ingests the full document set, whatever format it arrives in, and runs a structured first pass against the same categories your associates are trained to look for. It flags privileged communications based on sender and recipient patterns plus content signals, surfaces PII and confidential data using pattern recognition tuned for the categories your matter involves, and produces a document-by-document summary with a confidence flag on each call. Every flag comes with the passage that triggered it, so nothing is a black box decision.

The output isn’t a finished production. It’s an associate-grade memo, page-referenced, that a senior associate or partner reviews and confirms in a fraction of the time a full first pass would take. The redaction application itself, the mechanical box-drawing and Bates stamping, happens automatically once the calls are confirmed. What used to take 150 hours of associate time on a 10,000-page batch typically compresses to a fraction of that in review and confirmation time, with the actual privilege judgment still sitting with a licensed attorney where it belongs.

That last point matters for risk management. This isn’t about removing lawyer judgment from privilege calls. It’s about not paying $250-per-hour rates for the mechanical 70% of the process so your team can spend its time on the 30% that actually requires a bar license.

The leak doesn’t stop at discovery

Discovery review rarely sits in isolation. Firms that lose margin here usually lose it in two or three other places too, and it’s worth naming them because the fix tends to be the same operating model.

Billable-hour leakage shows up broadly across matter admin, not just discovery. We typically see 4 to 6 hours per attorney per week that never make it onto an invoice, buried in intake calls, status update emails, and document organization that nobody tracks as billable but that still consumes the day. If your firm has 10 fee-earners, that’s 40 to 60 hours a week, every week, of unrecovered capacity.

Intake is the other quiet one. A prospective client calls after 6pm or on a Saturday, and if nobody picks up, 30-40% of that after-hours intake never converts, because the caller moves to the next firm on their list. An Intake Voice Agent answers every call, runs a conflict check against your existing matter database, captures the essential facts, and books the consultation directly onto the right partner’s calendar. It doesn’t replace your intake team, it makes sure nothing falls through the after-hours gap.

Paired with a Matter Triage Agent that reviews incoming form submissions and emails, classifies the practice area, scores fit against your firm’s ideal client profile, and routes it to the right partner with a one-paragraph brief attached, you end up with a front door that never sits idle and a back office that never loses a discovery hour to manual first-pass grind. These aren’t three separate projects. They’re the same operating model applied to three different points where your firm currently loses money quietly.

If you want to see how this plays out for firms your size specifically, see Omni for law firms walks through the mechanics in more depth than we can cover here.

The dollar reality for your firm

Take your own numbers and run this exercise before you take anyone’s word for it, including ours.

Count your active discovery matters over the last 12 months. Estimate average page volume per matter. Apply the 40-80 pages per hour associate throughput range and your actual blended associate rate. That’s your baseline redaction cost. Now ask your billing partner what percentage of that actually made it onto a paid invoice versus what got written off or absorbed as overhead.

For most firms in the $1M-25M range, that exercise lands somewhere in the $80,000 to $250,000 annual leakage band we mentioned earlier, and it’s rarely a single matter driving it. It’s the accumulation across every discovery-heavy file your firm touches in a year, plus the opportunity cost of associates who could be doing $400-an-hour strategy work instead of $80-an-hour page-flipping dressed up as billable time.

If you’re not sure where your firm falls in that range, that’s exactly what a short audit is built to answer, not a sales pitch, an actual number specific to your practice.

What a 60-minute Omni Audit actually gives you

We built the Omni Audit because most firms don’t need another vendor deck. They need three concrete things: a clear picture of where the hours are actually going, an honest estimate of what that’s costing in dollars per year, and a short list of what an AI agent could realistically take off your team’s plate given your matter mix and your current tech stack.

Sixty minutes, on a call, no slide deck. You walk away with those three outputs whether or not you ever become a client. If you run a litigation-heavy practice, or even a mixed practice with a discovery-heavy transactional group, this is worth the hour just to get the number on paper.

Book a 60-min Omni Audit and bring your last three discovery matters. We’ll walk through the actual hours, not a generic industry estimate.

A smaller step first, if you want one

If a full audit feels like a bigger commitment than you’re ready for this week, we put together an AI Client Intake Checklist for Law Firms that’s a practical starting point, specifically aimed at the intake side of this problem rather than discovery. It’s a worksheet your office manager or intake lead can run through in an afternoon to see where after-hours calls and form submissions are actually going right now. You can grab the checklist here or pull the direct file from this download link if you’d rather skip the landing page.

For more on how the underlying agents work across voice and back-office tasks, our Omni Ops page covers the document and matter-handling side in detail, and Omni Voice covers the intake side if that’s the bigger bleed for your firm right now. We also publish ongoing breakdowns of this kind of math across other practice areas in our insights library, if you want to see how the numbers compare for firms doing family law, personal injury, or commercial litigation.

The bottom line

Redaction work isn’t going away, and privilege review will always need a licensed attorney’s sign-off. But the mechanical 70% of that process, the page-by-page scanning, the pattern matching on PII, the box-drawing and stamping, doesn’t need to sit on your most expensive people’s calendars. Every hour it does is an hour your firm is paying senior rates for junior work, or worse, writing off entirely.

If the $80,000 to $250,000 range sounds close to what your firm might actually be losing, don’t guess. Get the real number. See Omni for law firms for the full picture of how the audit works, or go ahead and book my Omni Audit directly. Sixty minutes, three outputs, no deck.