Six Sigma is a management technique invented by Motorola, famously embraced by Jack Welch. The Greek letter sigma is the mathematical symbol for standard deviation. Six sigma accuracy means only 3.4 faults per million products, which is what it promises. It sounds classy in the land of Phi Beta Kappa and other fraternities, but would never have got off the ground here as it's impossible to pronounce, especially after a good lunch. Not for nothing is 'sigmatism' the technical term for a lisp.
We reveal the army of male business leaders who are fighting for a more equal workplace.
DEFEND YOUR WORK: In an uncertain world, leaders need to rely on "unsafe thinking", says author Jonah Sachs.
"We're the opposite of Michael Kors", says Radley CEO Justin Stead
Acupuncture, nudges and sleep pods can all help boost morale.
A leadership tip for coping with pressure from the boss of Serco's prisons and immigration business.
Membership-based business models are increasingly lucrative, but you need to do it properly.