11/06/2026
“Your labour isn’t progressing.”
What you hear is “your labour isn’t progressing.” What gets written in your notes is “failure to progress.” It’s one of the most common triggers for intervention in a birth suite.
The benchmark behind that phrase? A single study from 1955.
Dr Emanuel Friedman defined active labour as beginning at 4cm, with a minimum progress of 1cm per hour. That definition became the global standard — and it has been governing labour management ever since.
In 2010, researchers analysed the labours of more than 62,000 women who all birthed vaginally with normal outcomes. This data paints a different picture —active labour doesn’t reliably begin until around 6cm, not 4cm. The 1cm/hour rule was never an accurate measure — and before 6cm, it shouldn’t apply at all. After 6cm, labour naturally picks up the pace.
In 2018, the WHO updated its guidelines accordingly. Slower dilation alone is not grounds for intervention.
Despite the updated guidelines, many women are still assessed against older expectations of labour progress.
Hospitals set their own protocols. When protocols take precedence over the individual, important context can be lost. When you’re told your labour isn’t progressing, it’s worth asking what’s driving that recommendation. A genuine concern for you or your baby is very different from a number on a chart not meeting an outdated timeline.
Knowing this puts you in a position to ask questions, understand what is being recommended and why, and make decisions that are actually informed. This is exactly the kind of knowledge we build in every session — so that when you’re in that room, you know what to ask.