Goal drift is when the work gradually disconnects from the goals it was supposed to prove. It doesn't happen in a single decision. It accumulates through a hundred small redirects: a priority shuffle here, a client ask there, a fire that consumed three weeks, a new hire whose work nobody mapped to anything.
By the time someone looks at the goals, the work has been pointing somewhere else for two months.
Why it's invisible until it's expensive
The insidious thing about goal drift is that work keeps happening. Velocity metrics look fine. People are busy. Projects are moving. The drift is invisible in any single-week view — it only becomes visible when you compare the sum of the work to the sum of the goals.
Most companies do this comparison once per quarter, in the QBR. Which means they catch drift after roughly sixty-seven days of compounding. By that point, the cost isn't just the missed goal — it's the opportunity cost of eight weeks of effort invested in the wrong direction.
Teams that review goal-work alignment weekly catch drift within eight days. The difference in outcome between those two numbers is significant.
What drift actually costs
The visible cost is the missed key result. But that's the small part.
The larger cost is invisible: the work that wasn't done because capacity was consumed by drifted work. The strategic bet that went underfunded because resources followed activity rather than objectives. The compounded opportunity cost of effort that built nothing that the strategy required.
Goal drift is not a failure of effort. It's a failure of visibility. People worked hard. They just couldn't see that they were working on the wrong things.
How to catch it before it costs
Drift becomes visible when goals and work live in the same system — when you can see, at any point in time, which goals have work attached and which don't. It becomes expensive when the only view is a quarterly report.
The intervention is structural, not cultural. You can't ask people to "stay aligned" without giving them a system that makes alignment visible. When goal health is visible next to the work, drift becomes a weekly conversation rather than a quarterly surprise.