I suppose it depends on the model of risk associated:

If I drop my keys this will take another 10 seconds.

if I cut my finger while chopping vegetables this whole process will take an extra minute.

where the whole task might be a minute; taking another minute to fix things up is a 100% time increase. Where a task that might not be rushed; something that takes an hour; an extra minute won't be as big a change. so not as bad a change? (but this is something of a different effect)