Estimate a task using a recent similar attempt, including preparation and waiting that affect completion. Separate active work from elapsed time, then check what has changed. Keep the estimate provisional when new requirements appear and compare the next attempt with it to improve future planning.
You expect a weekly report to take half an hour because writing it seems straightforward. Finding the numbers, checking them and waiting for a reply made last week's version take much longer.
Use one recent attempt as your starting estimate. Separate time spent working from time spent waiting, then include both where they affect the deadline. You may need to request the numbers a day before sitting down to write.
Record a useful comparison
After the next attempt, note the broad difference. Was the task unusually complicated, or is the original estimate usually too small? You do not need a minute-by-minute log to notice that the same preparation keeps taking an hour.
For unfamiliar work, name the uncertainty before making a firm promise. You can give an estimate after reviewing the material or agree on a smaller first deliverable. Keep estimates provisional when the conditions change. A past attempt is helpful evidence, but a report with new requirements deserves another look even if its name is unchanged.
An estimate that includes waiting for information
An illustrative exampleSuppose last week’s report needed forty minutes of writing and twenty minutes of checking figures. You also waited until the next morning for one answer. These are illustrative amounts. A plan allowing an hour of active work may be reasonable, but it still needs the question sent early enough for a reply. Before the next report, check whether new data or a different audience changes the task. Request the missing figure first, then reserve the writing block after it is expected. After finishing, note which part differed from the estimate. That small record is enough to improve the next plan without tracking every minute of the day.
Build an estimate from an actual attempt
Tick the steps as you work through them.
0 of 5 steps checked
When you have no comparable task
Begin with a limited review of the material before making a firm promise. Identify uncertain steps and dependencies, then give an estimate appropriate to what you know. You may agree an initial deliverable so the next stage can be estimated more accurately. If someone needs a fixed deadline, discuss scope and available support explicitly. Avoid hiding unknowns inside a confident number. When the task is complete, keep a brief breakdown of the work and delays so a future estimate has something concrete to use.
Your estimate note
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