Legal work in progress, or WIP, generally means work that has been performed or recorded but has not yet completed the billing cycle. Depending on the firm, WIP may include draft time, approved but unreleased time, time waiting for prebill, expenses waiting to be billed, or internally tracked effort on fixed-fee matters.
The firm should define exactly which stages its WIP report includes. Mixing draft activity with approved billing-ready time makes the number harder to manage.
Why WIP Visibility Matters
Poor WIP visibility can hide missing time, late entries, draft backlogs, delayed partner review, and matters that are aging before billing. It can also make month-end billing feel like a reconstruction exercise.
A useful WIP view answers three questions: what work exists, what stage it is in, and who owns the next action.
WIP Visibility Starts Before Prebill
A billing team cannot see work that never became a usable entry. A stronger model separates the early stages:
Step | Pipeline stage |
1 | Work activity detected |
2 | Draft time entry |
3 | Timekeeper review |
4 | Approved or released time |
5 | Prebill |
6 | Invoice |
This makes the invisible part of the billing pipeline visible earlier.
Core WIP Metrics
Useful metrics include unreleased time, WIP by matter, WIP age, draft age, time-entry submission lag, WIP by timekeeper, and WIP by practice group.
Metric | Practical use |
Unreleased time | Finds entries still waiting for user action |
WIP age | Shows how long work remains unbilled |
Draft age | Shows how long captured work remains unreviewed |
WIP by matter | Identifies high-value matters needing attention |
Submission lag | Shows delay between work and approved entry |
Every metric should allow drill-down to the underlying entries.
Draft Time vs Approved WIP
Draft time should be separated from approved WIP. Drafts may still need matter selection, duration review, narrative editing, billing-status confirmation, or code correction. Approved WIP should be materially closer to billing.
This separation also clarifies ownership: the lawyer owns completion of the draft; billing owns downstream preparation; the partner may own prebill approval.
WIP Aging
Age buckets can be tailored to the firm's billing cadence, for example 0–7, 8–14, 15–30, 31–60, and 61+ days. A weekly-billing practice should not use the same thresholds as a monthly practice.
Old WIP is not automatically bad. Some matters are intentionally held, billed by milestone, or governed by a fixed-fee arrangement.
Matter-Level WIP
A matter view should show more than value. Useful context includes timekeepers, matter phase, hours, draft count, oldest unreviewed entry, budget status, client rules, and prior write-down patterns.
This helps reviewers distinguish a process delay from an intentional commercial decision.
WIP, Realization, and Lockup
WIP is not the same as realization, but long WIP age can lengthen realization lockup—the period between doing the work and issuing the invoice. The ABA has highlighted lockup as a useful lens for finding revenue bottlenecks.
Better time capture cannot solve every billing delay, but it can shorten the first stage of the cycle.
How to Improve WIP Visibility
A practical approach is to define WIP stages, track draft and approved time separately, set age thresholds, assign owners for exceptions, review WIP weekly, and record why bills are intentionally held.
The point is not to pressure every matter toward immediate billing. It is to make status and ownership explicit.
How MIRA Fits
MIRA supports the upstream timekeeping stage. It captures billable and non-billable activity, prepares reviewable entries, and lets users edit, merge, exclude, save, or release entries before they move toward supported finance systems.
MIRA's current product positioning also includes WIP analytics and financial visibility. It does not replace invoice generation, accounting, or collections.
Related Resources
Authoritative References
This guide is for educational purposes only. Billing, accounting, client, and professional-conduct requirements vary by firm, engagement, and jurisdiction.
Frequently Asked Questions
What is WIP in a law firm?
WIP generally means legal work that has been recorded but has not yet completed the billing process.
Is draft time the same as WIP?
Not always. Firms should separate unreviewed draft time from approved but unbilled time.
What is WIP aging?
WIP aging groups unbilled work by how long it has remained in the pipeline.
Can MIRA show WIP?
MIRA's current positioning includes WIP analytics and financial visibility, while its core role remains time capture and time-entry review upstream of billing.
