Outside Counsel Guidelines: A Modern Compliance Primer

Most partners have never read an outside counsel guidelines document cover to cover. Most billing coordinators have read several, but the lessons rarely make it back to the timekeepers. And so — reliably, quietly, every month — a meaningful percentage of the work a firm did gets written down because of a rule somebody didn't know was there.

OCGs aren't glamorous. They're also the single most actionable area of billing compliance. Here's a plain-English primer on what's in them, which ones matter most, and how to stay compliant without turning every timesheet into a research project.

What an OCG actually is

An outside counsel guidelines document is a contract between the client and the firm that sits alongside the engagement letter. It spells out — often in 20 to 60 pages of small type — exactly how the client expects the firm to bill, staff, communicate, and document.

OCGs vary dramatically by client. A mid-market insurance company's OCG might be five pages of boilerplate. A Fortune 100 bank's OCG will have appendices, schedules, and cross-references to three other policy documents. The common thread is that non-compliance means write-down — and nobody tells you that's why the invoice got reduced.

The ten most common OCG rules

Across the hundreds of OCGs Esqio customers have uploaded, these rules show up over and over:

1. Block billing prohibited. Each task must be on its own line with its own narrative and time.
2. Minimum narrative detail. Usually a specified minimum word count or a required format like "[activity] [subject] [purpose]."
3. Phase/task code required. Almost always UTBMS, sometimes a proprietary client code system.
4. Timekeeper seniority restrictions. Specific tasks must be performed by a specific level (e.g., no partner-level work under 0.5h, no paralegal work over 8h per matter).
5. Non-billable categories. Commonly: administrative, file review, inter-office conferences, travel time, clerical work.
6. Rate caps and discounts. Blended rates, matter-specific caps, volume discounts over thresholds.
7. Billing increment rules. Most require 0.1h increments; some mandate 0.25h rounding; some prohibit rounding entirely.
8. Advance approval thresholds. Research over X hours, depositions, experts, travel — all require pre-approval.
9. Billing frequency. Monthly almost always; some require bi-weekly; some have hard cut-off dates.
10. E-billing format. LEDES 1998B, 1998BI, V2, or sometimes a proprietary portal with specific field requirements.

Why manual compliance fails

Here's the structural problem: OCG compliance happens at the moment a timekeeper writes an entry. But the person writing the entry almost never knows the OCG. They've been told "bill your time" and trust the billing coordinator to catch issues at month-end.

The billing coordinator does catch issues at month-end, but by then the narrative is six days old, the specific activity is half-remembered, and the decision is binary: fix it (requires going back to the timekeeper for clarification they can't provide) or write it down. Write-downs win.

The average firm with Fortune-500 clients writes down 8–12% of billed hours on OCG compliance issues alone. On a $50M practice, that's $4M to $6M a year vanishing into billing corrections that could have been prevented at the moment of entry.

How modern tooling solves this

The fix is to move OCG enforcement from month-end to the moment of entry. This is what Esqio does by design: upload each client's OCG once, and every entry against that client's matters is automatically checked in real time against the rules. Block billing triggers a split. Missing phase codes get auto-populated. Narratives that fall short get expanded. Non-billable activities get tagged.

The timekeeper doesn't have to remember the OCG. The billing coordinator doesn't have to spend month-end fixing violations. The entry that hits the invoice is already compliant when it's drafted.

Three things you can do this week

1. Audit your top five clients' OCGs. If anyone at your firm can't answer "what's the block-billing rule for our biggest client?" in under ten seconds, that's a compliance hole.
2. Measure your current write-down rate by client. Pull the last six months of invoices and calculate the percentage of billed hours that came off. The clients with the highest rates are where OCG enforcement is failing.
3. Get the OCGs in front of your timekeepers. Not as a 60-page PDF — as a one-page summary of the specific rules that affect how they write entries day to day.

Going further

Esqio's OCG engine was built by working directly with firms who were losing the most to write-downs. If you want to see what your firm's compliance picture looks like, talk to our team — we'll run a sample of your billing history against our rule engine and show you the specific write-down patterns we'd catch.