Stop Mentoring People. Start Sponsoring Them.

Mentoring is advice that costs little, while sponsorship means spending your own organisational capital to advance someone, and that difference decides whose career moves and whose does not. 

I once asked a senior partner how many people he was mentoring. He lit up: six, maybe seven, regular coffees, always happy to give advice, door’s always open. Good man, genuinely. Then I asked a different question: in the last year, whose name had he put forward, in a room they weren’t in, for something that mattered? He thought about it for a while. The honest answer was nobody. 

That’s an important gap. He believed he was developing people. What he was actually doing was being pleasant to them. And the difference between those two things can be the difference between a career that moves and one that quietly stalls. 

What Is the Difference Between Mentorship and Sponsorship?

The distinction sounds like semantics until you look at what each one actually involves. A mentor talks to you. Shares experience, offers guidance, helps you see your own strengths. It’s valuable, it’s generous, and it costs the mentor very little beyond time. You can mentor someone for years without ever putting yourself on the line for them. 

A sponsor talks about you, in rooms you’re not in. As one widely cited framing puts it, a sponsor has three jobs: to go out on a limb for their protégé, to spend their own organisational capital pushing for that person’s advancement, and to provide “air cover” when the protégé takes a risk and it doesn’t come off. That last one matters. Sponsorship means tying a piece of your own reputation to someone else’s performance, and being willing to lose a little of it if they stumble. 

That is why sponsorship is rare and mentoring is everywhere. Mentoring is safe. Sponsorship is exposure. Most leaders, if they’re honest, have quietly chosen the safe one and told themselves it was the same thing. 

How Sponsorship Affects Pay and Promotion

This isn’t a soft, feel-good distinction. The advancement gap between the two is measurable and large. 

Research from Catalyst and others has consistently found that sponsorship, not mentorship, is what moves people into senior roles. And the people who most need it get the least of it. Women tend to be over-mentored and under-sponsored: they collect advice while their male peers collect advocates. Analysis by Payscale found that employees with a sponsor are paid a “sponsorship premium,” earning up to 11.6 percent more than otherwise comparable colleagues without one. Gallup’s research adds another layer: employees with a formal sponsor are 48 percent more likely than those with only an informal one to strongly agree that their workplace offers everyone an equal shot at senior roles. It isn’t just having a sponsor that matters, but the firm deliberately putting the relationship in place. Sponsorship done on purpose changes how fair the whole place feels. 

The UK tells the same story. The Pipeline’s Women Count report, which has tracked FTSE 350 executive committees since 2016, points to a lack of sponsorship as one of the reasons female representation on those committees fell in 2024, the first drop in eight years. The pattern repeats by race: Business in the Community‘s research found that 31 percent of Black employees wanted a sponsor, against 12 percent of white employees. Wanting one and getting one are different things, and that gap is where careers quietly diverge. 

And here’s the part that should interest any self-interested partner: sponsoring is good for the sponsor too. Harvard Business Review research found that senior managers with a protégé were 53 percent more likely to have been promoted in the previous two years, and entry-level managers with one were 60 percent more likely to have received a stretch assignment. The story that sponsorship is pure altruism (a tax the successful pay) turns out to be wrong. It’s a relationship that lifts both people. 

Why Sponsorship Is Harder in a Sector Like Professional Services

In a billable-hours world, sponsorship runs into the same wall everything else does. Advocating for someone, staffing them onto the visible work, defending a decision to put an unproven name in front of a client: none of it shows up on a utilisation report, and all of it carries personal risk. 

There’s a subtler problem too, well documented in the research: people tend to sponsor in their own image. Sponsorship runs on trust, and trust forms fastest with people who remind us of ourselves. So left to its natural course, sponsorship reinforces exactly the homogeneity it could be used to break. The senior cohort sponsors the juniors who look and sound like a younger version of themselves, and the cycle quietly repeats. Which is precisely why the people who’d benefit most from a sponsor are the least likely to be offered one. 

UK law firms show exactly this pattern. The Law Society reports that women now make up 53 percent of practising solicitors but only 35 percent of partners, and that some firms run sponsorship education for male leaders, because the people with the power to sponsor are still overwhelmingly men, and most of them sponsor other men. The Law Society Gazette adds a point about timing, reporting that sponsorship needs to start about three years before someone would be considered for partnership, well before the year it is decided. 

That’s not an argument against sponsorship. It’s an argument for doing it deliberately rather than letting it happen by instinct. 

What Effective Sponsors Do Differently

The leaders who get this right do three concrete things. 

They sponsor on purpose, not by chemistry. They notice when every name they’ve championed in the last year fits the same profile, and they treat that as a signal, not a coincidence. They deliberately back people whose talent they rate but whose face doesn’t fit the usual mould, and they do it publicly, because the whole point of sponsorship is the visibility. 

They put their capital where their mouth is. Advice is free; advocacy costs something. They are willing to say “put her on the pitch” and mean it, and to wear a bit of the downside if it doesn’t land, because they understand that’s the entire job, not a regrettable side effect of it. 

And they also keep mentoring in its place. Mentoring is good. Have coffees, give advice, keep the door open. Just don’t mistake it for the thing that actually changes someone’s trajectory, and don’t let “I mentor loads of people” become the alibi that lets you off the harder hook. 

A Question to Ask About Your Own Sponsorship

So, the question worth sitting with: 

Picture the last big opportunity you had real influence over: a pitch team, a secondment, a name floated for promotion. Whose name did you put forward, and whose name did it not occur to you to put forward? 

Because everyone you advise over coffee will tell you you’re a great mentor. The real test is the list of people whose careers moved because you were willing to spend something of your own. If that list is short, or if everyone on it looks like you, then you have plenty of mentees and you are nobody’s sponsor. 

About the Author

James Nathan is a Partner at Stanton Chase London. With more than twenty-five years in executive search and professional services, he advises boards and senior leadership teams across consulting, legal, accountancy, and financial advisory on high-stakes leadership appointments and succession decisions, from specialist boutiques to private equity-backed and established global businesses. He qualified as a Chartered Accountant before building his career in recruitment and advisory, and he works with clients on leadership structure, succession planning, and talent strategy through periods of growth, transformation, and leadership transition.