Onboarding a new employee: a step-by-step plan for HR

Your new employee's first workday. She's at the door at 8:45. Excited, a little nervous. Ready to make a good impression.

But inside, it plays out differently. Nobody knew she was starting today. Her desk is taken. The laptop? Not ordered yet. And her manager is in meetings all day.

Sound familiar? You're not the only one. Research shows that one in three new employees consider leaving after their first workday. Not because the job disappoints, but because their reception was chaos.

Good onboarding isn't a luxury. It decides whether your investment in recruitment pays off. In this article, you'll get a complete onboarding checklist for HR, from preboarding to the first month, including the legal obligations every Belgian employer needs to know.

Why onboarding matters so much

Onboarding directly drives retention and productivity, and the numbers make the case. A structured onboarding process improves employee retention by 82%. New hires reach full productivity up to 70% faster. And 69% of them stay at least three years when onboarding is done well.

The flip side is less rosy. 64% of employees start looking for a new job within the first year if their onboarding experience was negative. Around 20% of all new hires leave within 45 days. Of those who leave in the first year, two out of three are already gone within the first six months.

In our experience with thousands of new employees, the cost of a failed onboarding is often underestimated. You don't just lose the recruitment costs. You also lose the time colleagues invested, the knowledge that was never passed on, and the momentum that never built up.

Here's the key point: onboarding isn't an administrative formality. It's the foundation of your working relationship.

Phase 1: preboarding (before the first day)

Preboarding is everything that happens between signing the contract and the first workday. Many employers skip this phase. That's a missed opportunity.

Research shows that 64% of employees had no preboarding experience, while 85% of recently placed employees consider it essential to receive details about their first day in advance.

Right after signing the contract

Send a welcome email within 24 hours. Not a standard "congratulations on your new job", but concrete information:

• Start date, time and location
• Name and contact details of the day-1 contact person
• What they need to bring (ID, bank details, diplomas)
• Dress code or practical tips about the workplace

One to two weeks before the start

Now's the time to sort out the practical side:

IT and workspace:

• Order and set up a laptop or computer
• Create an email address and accounts
• Arrange an access badge or keys
• Set up the workspace (desk, chair, monitor)
• Assign a phone number if needed

Administration:

• File the Dimona declaration (by the day of entry into service at the latest)
• Finalise the employment contract
• Prepare the work regulations
• Get the tax form and bank account forms ready

Team and planning:

• Inform the team about the new colleague
• Assign a buddy or mentor
• Plan the first week with introductions and training
• Schedule review moments (day 1, week 1, month 1, month 3)

Introducing the buddy

Pair your new employee with an experienced colleague who acts as their buddy. Have them make contact before the start. A quick phone call or email. "Hi, I'm Sofie. I've been here three years and I'm your go-to for any questions. See you Monday."

It sounds simple. But it makes a world of difference. Your new employee walks in to a familiar face.

Tip: spread out the information

Don't send all the documents and information at once. Spread it across several touchpoints. One email about the first day. A few days later, one about the team. Later still, one about the company culture.

That way you prevent overload and build the relationship gradually.

Phase 2: the first workday

The first workday sets the tone. A chaotic start is hard to undo. A warm welcome isn't easily forgotten.

First-day checklist

Welcome (first hour):

• A personal welcome from the manager or HR
• A tour of the building (canteen, toilets, meeting rooms, emergency exits)
• Show the workspace and hand over the equipment
• Provide login details and the access badge

Introductions (morning):

• Introduce them to their direct team members
• A brief introduction to other departments
• Lunch with the buddy or team

Practical (afternoon):

• Walk through the systems and tools
• Discuss the schedule for the first week
• Explain the work regulations and company policies
• Sign the administrative documents

Wrap-up (end of day):

• Check in: how was the first day?
• Answer any questions
• Confirm the plan for tomorrow

What to avoid on day 1

Let's get practical for a moment. We see these mistakes regularly:

Too much information. Your new employee is buried under presentations, manuals and systems. By the end of the day, it's all a blur. Stick to the essentials. The rest can come later.

No clear programme. "Feel free to look around." No. Your new employee needs structure. An agenda, a plan, a goal for the day.

Diving straight into work. Yes, you hired someone to work. But day 1 is about orientation and connection. Productivity comes later.

The manager is absent. If the direct manager is in meetings all day, the new employee doesn't feel like a priority. Plan the manager's diary around this.

Phase 3: the first week

The first week is about integration. Your new employee gets to know the systems, builds relationships and gets a grip on the role.

First-week checklist

Day 2-3:

• A deeper introduction to direct colleagues
• An explanation of ongoing projects
• Verify access to all the required systems
• Give a first small task or assignment

Day 4-5:

• An introduction to other departments
• Training on company-specific processes
• Ask for feedback: what's going well, what's unclear?
• First check-in with the manager

The buddy system

The buddy is the first point of contact. Not the manager, not HR. The buddy.

The buddy answers the "silly questions" without judgment. Where do I put my coffee mug? How does the printer work? Can I work from home too? The buddy shares the unwritten rules. "We usually have lunch at 12:30." "Fridays are casual." The buddy spots trouble early. If the new employee is struggling or unsure, the buddy notices first.

Choose your buddy carefully. It should be someone with time, patience and people skills. Not necessarily your top performer, but your best people person.

Training and development

Schedule training for the first week:

• Company culture, mission and values
• Compliance and safety
• Role-specific systems and processes
• Communication tools (Teams, Slack, email etiquette)

Spread it out. Not everything on day 2. Give them time to absorb it.

Phase 4: the first month

The first month is crucial for integration. Your new employee starts working independently, but still needs guidance.

Weekly check-ins

Schedule a short conversation with the manager every week:

• How are things going? What's working well?
• What are you running into?
• Do you have everything you need?
• Are your expectations realistic?

These conversations don't need to be long. Fifteen minutes is often enough. It's about the signal: we see you, we're listening, you're not alone.

Setting goals

Work together on goals for the first 90 days. What should this employee be able to do by the end of month 3? Break that down into monthly milestones.

Employees who go through an onboarding programme meet their goals in 62% of cases. Without a programme, that drops to just 17%.

Two-way feedback

Don't just ask how things are going. Ask what you, as the employer, could do better.

• Was the preboarding clear?
• Did the first day feel organised?
• Have you had enough support?

This feedback helps you improve onboarding for the next hires.

Administrative obligations in Belgium

As a Belgian employer, you have legal obligations when you hire staff. This is where it gets legal. Not boring legal, but important.

Dimona declaration

The Dimona (immediate employment declaration) is mandatory. Every start of employment must be reported electronically to the NSSO.

When? By the day of entry into service at the latest, before the employee starts working. Too late? Then you risk a fine and an official report from the social inspectorate.

How? Through the social security portal or via your social secretariat. Want to know more? Read our article on the Dimona declaration for temporary workers.

With Recruit, your Dimona declaration is filed automatically as soon as you create the contract. No separate system, no extra steps.

Employment contract

A written employment contract isn't legally required in every situation, but it's strongly recommended. For certain contract types (fixed-term, part-time, replacement contract) it is mandatory.

The contract must be signed before the employee starts. Not "we'll sort it out later". Before the start.

Work regulations

Every employer with at least one employee is required to draw up work regulations. This document sets out the ground rules of your company:

• Working hours and schedules
• Breaks and holiday arrangements
• Wage payment (when, how)
• Sanctions and procedures
• Contact details (works council, prevention advisor, inspection services)
• NSSO number and Joint Committee

You must hand the work regulations to every new employee when they join. Within 8 days of entry into force, you must file a copy with the labour inspectorate (this can be done online via arbeidsreglement.belgie.be).

Social documents

You're required to keep and provide certain social documents:

• Payslips: Monthly summaries of gross pay, deductions and net pay
• Individual account: An annual overview of work performed and pay
• Staff register: A list of all employees with their identity, role and start date
• C4 form: On end of employment, for the unemployment claim

You must keep these documents for five years.

External prevention service

You're required to join an external service for prevention and protection at work (EDPBW). This service organises medical examinations and risk assessments.

This must be in place before your first employee starts.

Legal obligations checklist

In short, here's what you need to arrange before the first workday:

• Dimona declaration (by the start date at the latest)
• Employment contract signed
• Work regulations ready and handed over
• EDPBW membership arranged
• NSSO registration in order (if you're a new employer)

Want to register an employee as your first hire? Read our detailed guide covering every step.

With Recruit, you create employment contracts in under 60 seconds. The system automatically adds all the mandatory clauses for your Joint Committee.

Digital versus physical onboarding

Working from home has become the norm in many sectors. That calls for a different approach.

Digital onboarding

Advantages:

• Flexible scheduling
• Documents and training available 24/7
• A consistent experience for every new hire

Challenges:

• Harder to convey company culture
• Fewer spontaneous introductions
• The new employee can feel isolated

Tips for digital onboarding:

• Schedule extra video calls in the first weeks
• Organise a virtual coffee with the team
• Send a welcome package to their home address
• Make sure equipment is delivered before the start
• Assign a buddy who checks in briefly every day

Hybrid approach

Most companies opt for a mix. The first days in the office for the personal connection. After that, a combination of on-site and digital.

The main thing: adapt your onboarding to your working situation. Don't blindly copy a programme built for office work.

Common onboarding mistakes

We see the same mistakes come up again and again. Here are the main ones to avoid.

No preboarding

The period between contract and start is silence. The new employee hears nothing and starts to doubt. Was this the right choice after all?

Chaos on day 1

Workstation not ready, equipment not ordered, nobody expecting the new employee. This happens more often than you'd think.

Information overload

Every training, every manual, every system in the first two days. The new employee remembers nothing and feels overwhelmed.

Stopping too soon

After a week, onboarding is "done". The employee gets no more guidance. Yet integration takes at least three months.

Not asking for feedback

You don't know what's working and what could be better. You repeat the same mistakes with the next new hire.

The honest truth

Not every onboarding needs to be a Broadway production. Small companies don't have the resources for elaborate programmes. And that's fine.

What matters: preparation, clarity and a human touch. A simple checklist, a friendly welcome and a buddy who's available. That costs no budget. Just time and intention.

Evaluating and improving onboarding

You can't improve what you don't measure. Keep track of how your onboarding performs.

Metrics to track

• 90-day retention: How many new hires are still with you?
• Time to productivity: When does someone fully find their feet?
• Onboarding satisfaction: A score from feedback conversations
• Buddy evaluation: How does the buddy rate the integration?

Feedback moments

Schedule review conversations:

• After day 1
• After week 1
• After month 1
• After month 3

Use a standard questionnaire so you can compare between employees and over time.

Frequently asked questions

How long does good onboarding take? At least three months, ideally six. Most companies stop too early. The intensity eases off, but the guidance stays.

What if my company is too small for an extensive programme? You don't need a big programme. A checklist, a buddy and weekly check-ins are enough. It's about intention, not scale.

Should the manager handle onboarding, or HR? Both. HR takes care of the admin and the general programme. The manager handles the role-specific integration and day-to-day guidance.

How do you onboard several people at once? Cohort onboarding works well. Several new hires start together and follow the general training together. It's more efficient, and they can lean on each other.

What do you do if a new employee is struggling? Spot it early. Schedule an extra conversation, ask what's going wrong, adjust the guidance. Don't wait until it escalates.

In short

Good onboarding decides whether your new employee stays and performs. The statistics don't lie: 82% higher retention, 70% faster productivity. The investment pays off.

The essence is simple:

• Preboarding: be prepared and communicate
• Day 1: a warm welcome, no chaos
• Week 1: buddy, structure, first tasks
• Month 1: check-ins, goals, feedback
• Admin: Dimona, contract, work regulations

It takes time. But it costs far less than recruiting all over again.

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How Recruit helps you here

Would you rather focus on your core business than on payroll administration? That's what Recruit is for.

With Recruit:

• Contracts in under 60 seconds: Create trial and temp contracts without the hassle
• Automatic payroll calculation: Correct pay in line with current legislation and your Joint Committee
• Dimona and social documents: We handle every declaration, you focus on your business
• 24/7 personal support: Always a dedicated contact who knows your company
• No fixed monthly fees: Pay only for what you use

Try Recruit or get in touch with our HR experts for tailored advice.

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The information in this article is provided for general guidance only and does not replace professional legal or accounting advice. Employment legislation changes regularly. Always consult the current legislation or contact an HR expert for advice tailored to your situation.