← Cases
JapanTechnology and telecom2024 – ongoing

Japan Business Systems

Company-wide Microsoft 365 Copilot in corporate departments

Japan Business Systems says Copilot cut contract checks from about 15 minutes to about 5

WorkingCompany's own claim

Problem

Corporate departments such as general affairs, HR, legal and finance handled routine document work by hand, including contract checks and meeting minutes.

Approach

JBS rolled out Copilot for Microsoft 365 company-wide from March 2024. Corporate staff use it to draft Teams meeting minutes with custom prompts, review contracts, and draft, summarize and proofread documents. JBS described its own internal use at a Microsoft Japan briefing.

Results

平均15分 → 平均5分average time per contract check, from about 15 minutes to about 5, per JBSCompany's own claim[1]
約14時間increase in value-producing time per user, about 14 hours, per JBSCompany's own claim[1]

Takeaway

Contract review gave a clear before-and-after time per case, while the broader time gain was a company estimate across users.

Categories

Innovation type
Process innovation
AI technology
Generative AI
Evidence
Company's own claim

Sources

Source summaries

[1]Mynavi TECH+19 Mar 2024

The article covered a briefing where several companies described generative AI use. JBS said it rolled out Copilot for Microsoft 365 company-wide in March 2024, mainly in corporate functions. It gave contract checks falling from an average of 15 minutes to 5 and about 14 hours more value-producing time per user.

Full details are in the original sources.

Added 2 Nov 2026 · Updated 2 Nov 2026
Open case page ↗