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Business Term

時間管理

Time Management / タイムマネジメント

Time Management is a attention allocation system used for protecting high-value work from meetings, interruptions, and low-value commitments.

Use when
Time Management changes decisions by making the owner, boundary, required evidence, and review trigger explicit before work proceeds.
Watch out
Time Management will not speed execution when ownership remains ambiguous.
Updated: 2026. 04. 27.Quality: ReviewedSources: 2
What it means

Time Management is not a dictionary label; it is the operating discipline for allocating limited attention and calendar capacity to the work with the highest decision value. In practice it is used for protecting high-value work from meetings, interruptions, and low-value commitments by making owners, boundaries, evidence, and review triggers explicit.

How to design it

Start from outcomes before filling calendar blocks. Reserve focus capacity for work that cannot be fragmented. Batch low-risk coordination so it does not leak into every hour. Review whether time spent matches priority, not just busyness.

  • Start from outcomes before filling calendar blocks.
  • Reserve focus capacity for work that cannot be fragmented.
  • Batch low-risk coordination so it does not leak into every hour.
  • Review whether time spent matches priority, not just busyness.
How to run it

The owner reviews Time Management weekly or at milestone changes for status, open issues, and overdue commitments. Changes to Time Management are approved only after the affected owner, scope, customer or internal outcome are named. The review checks whether Time Management improves decisions and execution, not whether the document merely exists.

  • The owner reviews Time Management weekly or at milestone changes for status, open issues, and overdue commitments.
  • Changes to Time Management are approved only after the affected owner, scope, customer or internal outcome are named.
  • The review checks whether Time Management improves decisions and execution, not whether the document merely exists.
When it helps

Time Management changes decisions by making the owner, boundary, required evidence, and review trigger explicit before work proceeds. Time Management helps teams decide whether to start, stop, resize, or resequence work using evidence rather than meeting momentum. Time Management reduces rework because assumptions, unresolved questions, and follow-up responsibilities are visible enough to challenge.

  • Time Management changes decisions by making the owner, boundary, required evidence, and review trigger explicit before work proceeds.
  • Time Management helps teams decide whether to start, stop, resize, or resequence work using evidence rather than meeting momentum.
  • Time Management reduces rework because assumptions, unresolved questions, and follow-up responsibilities are visible enough to challenge.
When not to use it

the issue is unclear priority rather than calendar discipline urgent response work makes fixed blocks unsafe personal optimization hides a team-level bottleneck

  • the issue is unclear priority rather than calendar discipline
  • urgent response work makes fixed blocks unsafe
  • personal optimization hides a team-level bottleneck
How to use it
  • Define the decision question, accountable owner, and time horizon before using Time Management as an operating artifact.
  • Separate evidence from opinion so Time Management supports judgment instead of decorating a preferred answer.
  • Record what was accepted, what was deferred, and what signal would cause a future change in Time Management.
  • Use Time Management to choose a management action, not merely to produce a tidy document or status label.
  • Revise or retire Time Management when the boundary, owner, evidence, or operating context changes materially.
Decision cautions

Time Management will not speed execution when ownership remains ambiguous. Time Management becomes storage instead of a decision aid when it is too long to use. Time Management needs change history or teams cannot reconstruct why the decision moved.

  • Time Management will not speed execution when ownership remains ambiguous.
  • Time Management becomes storage instead of a decision aid when it is too long to use.
  • Time Management needs change history or teams cannot reconstruct why the decision moved.
Example

A team uses Time Management after noticing that discussion keeps producing activity without a clear management decision. For Time Management, the team defines the intended outcome, names one accountable owner, and lists the evidence that would change the decision. During the Time Management review, the team compares current evidence with the recorded boundary, adjusts the scope, and assigns follow-through work. The Time Management record now helps people see why the action was chosen, what risk was accepted, and when the decision should be revisited.

Compare with

Separate nearby terms by the decision each one supports. Focus time | Protects deep work | Time management allocates all attention modes Task management | Tracks commitments | Time management makes capacity realistic Priority | Chooses importance | Time management funds that choice with hours

MetricDifferenceWhy read together
Focus timeProtects deep workTime management allocates all attention modes
Task managementTracks commitmentsTime management makes capacity realistic
PriorityChooses importanceTime management funds that choice with hours
Common mistakes
  • Time Management is not valuable because the label exists; it is valuable only when it changes a decision or execution behavior.
  • More detail is not automatically better for Time Management; the useful level is the one that clarifies ownership and review.
  • Time Management is not a one-time workshop output because the artifact must stay current while the decision remains live.
Frequently asked questions
Is time management a personal productivity topic?

It can be personal, but in teams it is a capacity allocation and decision-quality issue.

What should be measured?

Compare planned time, actual time, interruptions, and progress on priority outcomes.

When does it fail?

It fails when calendars are optimized without changing demand, decision rights, or meeting load.

Sources
SourcesKindLink
Principles of Management (OpenStax)tier_sOpen
Wikipedia reference: Project ManagementsupplementalOpen