Ever noticed how the most well-meaning internal communication can quietly make things worse?
In early 20th-century Hanoi, authorities wanted to eliminate rats to improve public health. They offered a reward for every rat tail submitted.
The outcome looked successful on paper.
In reality, people cut off rat tails and released the rats so they could breed.
The rat population increased.
This episode, known as the Great Hanoi Rat Hunt, is one of the clearest examples of unintended consequences in history.
Workplaces repeat this mistake every day.
Why unintended consequences matter at work
Employees respond rationally to incentives, power, and risk.
Not to posters.
Not to values statements.
Not to leadership slogans.
Internal communication often assumes alignment. Employees optimise for survival.
That gap is where unintended consequences live.
Four common ways internal communication backfires
1. Recreating past success by importing the same team
When leaders move organisations, they often bring trusted colleagues along.
The intent is speed and reliability.
The consequence is cultural erosion.
Employees quickly conclude:
- Advancement is pre-decided
- Trust is exclusive, not earned
- Culture is imposed, not built
Messages about inclusion and opportunity lose credibility, not because they are wrong, but because behaviour contradicts them.
2. Leadership behaviour becoming an unspoken mandate
Leaders underestimate how closely they are watched.
In one organisation, a senior leader frequently altered her appearance to suit different meetings and events. Over time, her team felt pressure to mirror this behaviour to signal belonging.
Nothing was said explicitly.
That made it worse.
Fear replaced safety.
Compliance replaced choice.
Campaigns about wellbeing and psychological safety were actively undermined by what people observed daily.
3. Public misconduct followed by internal silence
When a senior leader is publicly called out for bullying or harassment, employees wait.
Not for legal detail.
For acknowledgment.
When nothing is said internally, and the organisation continues promoting its “great place to work” narrative, employees adjust their behaviour.
They stop trusting values.
They stop speaking up.
They stay only if the pay makes it worthwhile.
This is not engagement.
It is emotional withdrawal.
4. Selective sharing of employee survey results
When survey results are deeply critical, leadership sometimes shares only the comfortable insights.
Employees notice immediately.
The result is predictable:
- Lower participation next time
- Sanitised feedback
- Loss of belief in listening mechanisms
The organisation doesn’t lose data.
It loses honesty.
The lesson from the Hanoi Rat Hunt
People respond to the system you create, not the intention you declare.
Internal communication fails when:
- Power dynamics are ignored
- Symbolic behaviour goes unexamined
- Silence is mistaken for stability
- Narrative drifts away from lived experience
Just like the rat hunt, success metrics can improve while trust quietly collapses.
Resources you can use
- A simple model to spot unintended consequences early
Before approving major internal communication, apply the I-A-O Model:
Intent
What are we trying to achieve?
Action
What behaviours, signals, or incentives does this create?
Outcome
What is the most rational employee response to this system?
If the likely outcome contradicts the stated intent, stop and redesign.
B. A practical checklist for internal communication leaders
Before launch
- What behaviour does this reward, intentionally or not?
- Who feels exposed or unsafe if they respond honestly?
- What recent actions contradict this message?
During rollout
- Are leaders modelling restraint, not just visibility?
- Are uncomfortable questions addressed or avoided?
- Is silence being acknowledged or ignored?
After launch
- What are people no longer saying?
- Where has humour turned cynical?
- Who has disengaged quietly?
Silence is not neutrality.
It is feedback.
Dealing with truth
Internal communication does not fail because employees misunderstand the message.
It fails because they understand the organisation too well.
Unintended consequences are not communication mistakes.
They are system design failures.
Where have you seen good intentions quietly erode trust at work?
That is the conversation worth having.
