In Kanban there is a concept of Work In Process limits for more efficient overall operation. I've felt this myself recently as we enter a slower time of the year at work. When we're not operating at 100% (or more) of capacity, we have time to check our work, avoid mistakes and rework, and even consider process improvement.
Something to think about the next time you're heading into a period of 100% utilization. It may seem efficient, but find ways to reserve some buffer time.