0.3Manager roles and missions (Mintzberg)
The essentials in 30 seconds
- Mintzberg: managers juggle 10 roles in 3 families — not just "deciding".
- 3 families: interpersonal (relationships), informational (information), decisional (decisions).
- Reflex: we over-invest in emergencies and neglect circulating info and initiative.
Running mini-case — Salim's choppy day
Salim logs one of his days: welcoming a new hire, calling an unhappy customer, fixing a printer jam, chasing a supplier, arbitrating between two emergencies, reporting to the owner… By evening, he has done "nothing planned". Sorting each interruption with Mintzberg's grid, he discovers he lives 80% as firefighter (putting out fires) and 0% as disseminator (informing the team) and entrepreneur (improving).
Sequel to cases 0.1–0.2 — Salim measures the real scope of his job.
1. What a manager really does
Henry Mintzberg watched executives at work: far from the serene planner, managers juggle many roles in a choppy rhythm of interruptions and short sequences. He grouped them into three families: interpersonal (relationships), informational (information) and decisional (decisions). Salim's day is the perfect illustration.
Simple analogy: the manager is a three-ball juggler — relationships, information, decisions. Dropping the "information" ball (telling the team nothing) ruins the other two, even with good reflexes.
2. Three role families
Interpersonal roles (figurehead, leader, liaison) weave relationships; informational roles (monitor, disseminator, spokesperson) circulate information; decisional roles (entrepreneur, disturbance handler, resource allocator, negotiator) steer action. Salim is strong as disturbance handler (managing disruptions) but forgets disseminator (sharing info) and entrepreneur (starting improvements).
This grid helps realize the — often underestimated — scope of the job, and rebalance missions: protect slots for important but non-urgent roles.
🔎 Concrete example — The neglected role (Salim's case)
Over-invested: firefighter (putting out fires all day).
Neglected: disseminator (the team ignores priorities) + entrepreneur (no improvement).
→ Action: 15 min each morning to inform + 1 hr Friday to improve one process.
→ Protected slot: booked in the diary like a customer appointment.Result: a clear, complete view of his job.
Lesson: strengthen an under-invested role with a concrete, protected action.
Section vocabulary reinforced definitions
- Mintzberg roles
- A grid sorting managers' work into 3 complementary role families.
Simple example: Salim sorts his day: 6 firefights, 1 liaison, 0 sharing — the imbalance jumps out.
What it is not: a rigid job description where everyone would have only one role.
Reflex: once a month, sort your week into the 3 families.
- Interpersonal roles
- Figurehead, leader, liaison: the relationship dimension of the job.
Simple example: Salim welcomes the new hire, praises Karim in front of the team, calls the delivery service.
What it is not: "being social" with no link to work and results.
Reflex: each week, one connecting move (thank, introduce, connect).
- Informational roles
- Monitor, disseminator, spokesperson: capturing and circulating useful information.
Simple example: Salim reads complaints (monitor), shares the TOP 3 causes in 5 min (disseminate), alerts the owner (spokesperson).
What it is not: keeping info to keep power.
Reflex: any info useful to the team is shared within 24 hrs.
- Decisional roles
- Entrepreneur, disturbance handler, resource allocator, negotiator: steering action and allocating.
Simple example: Salim launches a template reply (entrepreneur), arbitrates two emergencies (handler), allocates shifts (allocator).
What it is not: deciding everything alone without explaining or delegating.
Reflex: every decision noted with who does what and by when.
- Choppy rhythm
- Managerial work fragmented into short sequences and permanent interruptions.
Simple example: Salim's morning: 11 interruptions in 3 hours, no case closed.
What it is not: a fate that forbids any deep work.
Reflex: protect 2 "deep" slots per week, phone on silent.
In practice — Mapping your manager roles
- For 3 days, log each activity and attach it to a family (relationships, information, decisions).
- Spot the over-invested (often firefighter) and the neglected (often disseminator, entrepreneur).
- Pick ONE neglected role + ONE concrete action (e.g. 10-min info brief each morning).
- Protect 1 "deep" slot in the diary for important but non-urgent roles.
Ready-to-say script — playing disseminator (5 min in the morning)
"Morning all, 5 minutes of info: yesterday, 3 complaints about deadlines — our priority today. Karim, you take emergencies; Lina, callbacks; me, the supplier. Questions? Same time tomorrow for review."
Short, factual, with allocation: it's the informational role that wins the day.
Copy-paste template — express Mintzberg mapping
WEEK OF: _______________
INTERPERSONAL (who did I connect / engage?): _______________
INFORMATIONAL (what info did I circulate?): _______________
DECISIONAL (what did I settle / start / allocate?): _______________
OVER-INVESTED: _______________ / NEGLECTED: _______________
REBALANCING ACTION (what, when): _______________Micro-business (2-3 people)
All 3 families play out in 10 minutes over coffee: news of the day + who does what + one watch point.
Remote / hybrid
The disseminator becomes critical: daily written summary (3 lines) or the team works blind.
Algerian SME
The spokesperson counts: liaising with owner, suppliers, administration — schedule a dedicated slot, not "when there's time".
Beginner / experienced
Beginner: map to discover the job. Experienced: audit to exit all-urgency and restart the entrepreneur.
✓ Best practices
- Sort your activities into the 3 families to see yourself acting.
- Strengthen neglected roles (often entrepreneur and disseminator).
- Protect slots for important but non-urgent roles.
✗ Common pitfalls
- Staying only reactive (managing emergencies).
- Neglecting information flow toward the team.
- Underestimating the job's real scope.
Key takeaways
- Mintzberg: 3 role families — interpersonal, informational, decisional.
- Managers juggle many roles in a choppy rhythm.
- Some roles are often neglected (entrepreneur, information disseminator).
- Realizing the job's scope helps balance missions.
48h challenge — apply tomorrow
Hold tomorrow morning's 5-minute info brief (script above) + log your day in 3 families in the evening. Count: how many "disseminator"? 15 minutes total.
- I can name the 3 families and 2 roles per family.
- I've spotted my over-invested role and a neglected one.
- I've held (or scheduled) the info brief + 1 deep slot.
Frequently asked questions
What is Mintzberg's grid concretely for?
As a mirror: by sorting what you really do, you see what you over-invest in (often emergencies) and what you delay (vision, info sharing). It's a tool to rebalance toward what matters, not just what's pressing.
Do managers really spend their time interrupted?
Yes, that's the observed reality: short sequences, permanent interruptions. But you can protect "deep" slots (thinking, preparation, feedback) to avoid pure reaction mode.
Salim puts out fires all day but never informs the team and starts no improvement. Per Mintzberg, what rebalancing?