Internal communications agency: what the work covers, when to hire one, and how to brief and measure it

An internal communications agency helps an organisation communicate with its own people: leadership messages, change programmes, intranet and employee app content, newsletters, events, onboarding and crisis updates for staff. Hire one when a change affects many employees and the internal team cannot carry it, when leaders need help saying hard things clearly, or when channels have grown messy and nobody owns them. A good agency starts with how your employees get information today, not with a campaign idea.

What the work covers

Service	What it produces
Strategy and audit	A map of channels, audiences and gaps, based on interviews and employee feedback
Change communication	A plan and messages for a merger, restructure, system rollout or policy change
Leadership communication	Speeches, all hands scripts, written updates and coaching for executives
Channel management	Intranet content, newsletters, employee app posts, digital signage
Employee engagement campaigns	Programmes around values, recognition, safety or wellbeing
Onboarding	The first weeks of material and messages for new joiners
Events and town halls	Planning, scripting and production, in person or online
Crisis and sensitive updates	Fast, accurate messages to staff when something goes wrong

Crisis messages to staff are a specialist service in their own right, and the external side is covered in the crisis communication agency page.

When an outside team earns its fee

• A large change is coming. A merger, a site closure or a new operating system for the company changes work for many people at once, and clear communication decides how well it lands.
• Staff are in many places. Frontline, shift and remote workers do not read the intranet, and they need a channel designed for them.
• Trust is low. People believe an honest outside view of how messages are being received.
• The internal team is one person. An agency adds capacity for a defined period.
• Leaders need help to speak plainly. A writer who is not caught up in the organisation's language can say what the leader means.

If the problem is that nobody has decided what to say, an agency will not fix it. Settle the decision first. The relationship between the internal and external message is explained in internal and external marketing.

Questions to put to each agency

1. How will you learn what our employees already know and believe? The answer should include interviews, a short survey or focus groups with staff at several levels, including frontline.
2. Who will do the work? Ask to meet the writers and the lead, not only the person selling.
3. Which channels will you use for people without a desk? Text messages, team briefings, posters and manager packs often beat email.
4. How will our managers be equipped? Employees trust their own manager most, and a good plan gives managers talking points and answers to likely questions.
5. How will you measure it? The answer must go past opens and clicks.
6. How do you handle confidential information? Restructures and results involve information that cannot leak.
7. Which sectors have you worked in? Healthcare, manufacturing and finance have different channel limits and rules.

How to brief one

• The business change and its date, in one paragraph.
• The audiences, by group: executives, managers, office staff, frontline, new joiners.
• What each group must know, feel and do by what date.
• The channels you already own and who runs them.
• What has gone wrong before, since staff remember.
• The approval route and who signs off messages, with the time each step takes.
• The budget range and the length of the engagement.

Fees and engagement models

Agencies price internal communications as a project fee for a defined programme, a retainer for continuing channel work, or a day rate for specialists such as a speechwriter or a producer. Ask for the number of days and the people behind each line, and a clear statement of what is excluded, such as printing, event venues and software. For a retainer, agree a quarterly review where either side can change the scope.

Measuring whether it worked

What you want to know	How to measure it
Did the message reach people	Reach by channel and by group, including frontline staff
Did they understand it	A short pulse survey with a question that tests the key point
Did they act	The behaviour the change needs: system logins, forms completed, training taken
Do they trust the messages	The same survey question every quarter, so you see the trend
What do managers hear	Questions that come up in team meetings, collected by managers

Set the measures before the work starts, so the agency and the leadership agree what success means.

The first ninety days with an agency

In the first month, the agency listens: it reads past messages, interviews leaders and managers, and asks employees what they hear and what they miss. In the second month it proposes a plan with a calendar, the channels and the measures, and you agree it in writing. In the third month the first messages go out, the pulse survey runs for the first time, and the agency reports what the staff said back. Review the plan at the end of that quarter. A good agency changes the plan when the feedback says it should, and tells you why.

Questions about internal communications agencies

What is the difference between internal communications and HR communications?

HR communications cover people policies and benefits. Internal communications cover everything the organisation tells its employees, including strategy, change, news and culture. They overlap, and the two teams should share a calendar.

Can a marketing agency do internal communications?

Some can. The skills differ: employees are a captive and sceptical audience, and the message must match what they see at work. Ask for internal communications examples.

How long does a change communication project run?

It runs from before the announcement to some time after the change takes effect, because the questions come after the news. Plan for the whole period when you set the scope.

Should the agency write as the CEO?

It can draft, but the leader must read, edit and own every word. Employees can tell when a message is not in the leader's voice.

What your people, and the people who might join, ask an assistant

An internal message does not stay inside. Employees repeat it, candidates ask about it, and when a restructure or a new policy becomes public, an assistant answers questions about the company from whatever is written about it: review sites, news and the careers page. What staff were told and what an assistant says about the same event can differ. Ask ChatGPT, Gemini, Perplexity and Claude what it is like to work at your company and what the company announced recently, and compare the answers with your own messages. The employer branding page covers the outward half, and AI Knows Us (aiknowsus.com) can run the question set and show the sources behind each answer.