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You missed one deadline last year. That number cannot tell you anything.

One event in 138 is too rare to trend. It cannot distinguish a well-run diary from a lucky one, and it will not move measurably however much you improve. The number that will is how close the other 138 came.

Slack remaining when each date was met

138 deadlines over the last twelve months. The left of this chart is the part that becomes a claim.

18

met with three days or less

13%

of everything on the register

0.25

misses you would expect in a quarter

That third figure is the whole argument. At the current rate a quarter with no misses and a quarter with one are the same quarter, statistically, and a firm managing to that number is managing to noise.

Why margin is the number

The last of these is a limit on what anybody selling this can honestly claim, including us.

Margin moves before misses do
18 of 138 deadlines were met with three days or less. That number can be halved and measured within a quarter; the miss count cannot move at all in a quarter without being luck.
The distribution has a shape worth reading
A firm with a fat left tail is not unlucky, it is running late systematically. A firm with a flat distribution is fine and does not know it, which is its own problem at renewal.
One miss a year is not a trend
At the current rate you would expect about 0.25 misses in a quarter. Reading a quarter with zero as an improvement, or a quarter with one as a crisis, is reading noise.
Nobody can count what was prevented
The strongest claim a system like this could make is unmeasurable by construction. Anyone quoting you prevented-claim figures has invented them, including us if we ever do.

Four ways a date gets missed

None of them are somebody forgetting. All of them are structural, and the first is the most common by a distance.

01 The date was never derived
Nobody read the clause that created it. This is the largest single cause and it is why derived dates and diarised dates are separated everywhere on this site.
02 It was on one person's list
Held by the associate who left, or the partner who was on leave. A deadline visible to one person is a deadline with a single point of failure.
03 The trigger moved and nothing recounted
An amendment changed the notice period and the diary entry did not follow. The date stayed confident and became wrong.
04 Everyone assumed somebody else had it
Shared responsibility for a date is no responsibility for it. Every entry needs one name against it, and the name has to be a person rather than a team.

What this does not cover

The second is permanent. No system reaches an obligation that was never written down.

Margin is a proxy, not the thing
A deadline met on the last day is not a failure. It is a warning that the process has no slack in it, and treating warnings as failures is how a register gets gamed.
It will not stop a deadline nobody entered
Dates derived from documents in the matter are covered. An obligation created in a phone call and never written down is invisible here and always will be.
Tightening margin costs something
Acting earlier means serving notices you might not have needed and doing work before it was strictly required. That cost is real and it is smaller than the alternative.
This is not insurance advice
Whether any of it affects a premium is a question for your broker. It is on the page because deadlines are where the claims are, not because we can price them.

The other outcomes