First hire checklist UK: what startups need to do before bringing in their first employee

Decide what you need from your first hire

Before you post a job ad, get clear on why you are hiring. Are you trying to free up founder time, bring in a specialist skill, or cover work that is becoming too much for the current team? A good first hire checklist UK should start with the business need, not the job title.

Write down the outcomes you want from the role in the first 3 to 6 months. That will help you shape the job properly, set realistic expectations, and avoid hiring someone who is not quite right for the stage your business is at.

• List the tasks that are taking too much time.
• Separate must-have skills from nice-to-have skills.
• Decide whether the role is permanent, fixed-term, part-time, or freelance.
• Think about what success will look like in the first 90 days.

Check the legal and payroll basics before you recruit

Once you know what you need, make sure the admin side is ready. This is the point where many startups rush ahead and create problems later. If you are unsure where to start, Flora HR can help with practical HR setup and hiring support so you are not trying to piece it together alone.

Getting the legal and payroll foundations in place early means you can make a proper offer, pay your new starter correctly, and avoid last-minute scrambling when they are ready to join.

Register as an employer and set up PAYE

If you are employing someone, you will usually need to register as an employer with HMRC and run payroll through PAYE. That allows you to deduct tax and National Insurance correctly and issue payslips.

You will also need to think about pension auto-enrolment, employment records, and how you will process payments each month. Even small teams need a simple, reliable payroll process that fits with how the business actually works.

• Register as an employer with HMRC before the first payday.
• Choose a payroll method or provider.
• Check whether auto-enrolment duties apply.
• Set up a process for payslips, starter details, and monthly pay runs.

Understand employment status, right to work, and holiday entitlement

Not every working arrangement should be treated the same way. Before you recruit, decide whether the role is genuinely an employee role or whether another arrangement is more suitable. Employment status matters because it affects pay, rights, tax, and how you manage the relationship.

You also need to carry out a right to work check before employment starts, and you should be clear on holiday entitlement from the outset. For a deeper look at the practical side of bringing someone into the business, see our guide on how to onboard someone in the UK. It is a useful companion to this checklist.

Holiday, sick pay, notice, and working hours should all be explained clearly in writing. Do not assume a new starter will know the rules just because they are standard in your business.

• Confirm the worker status before making an offer.
• Carry out and record a right to work check.
• Explain holiday entitlement clearly in the offer and contract.
• Make sure your working hours and pay arrangements are unambiguous.

Prepare the documents and processes you will need

Good paperwork does not need to be overcomplicated, but it does need to be in place. Your first hire should receive a clear offer, a written contract, and the main policies that apply to them from day one.

If you do not yet have a full set of HR documents, Flora HR can support you with outsourced HR support and practical document setup so your policies and contracts match how you actually run the business.

• Offer letter or written terms of offer.
• Employment contract with key terms and conditions.
• Policies such as sickness absence, holiday, disciplinary, and grievance.
• Data protection and confidentiality wording where needed.

Offer letter, employment contract, and key policies

Your offer letter should confirm the basics: job title, start date, pay, working hours, place of work, and any conditions attached to the offer. It should not leave room for guesswork.

The employment contract should then set out the fuller legal terms. Keep it plain English where possible. Your first hire does not need pages of jargon; they need to understand what they are agreeing to and what is expected of them.

If you are not sure whether your current templates are fit for purpose, it may be a good moment to get a second pair of eyes on them. Flora HR works with growing businesses that need straightforward HR consultancy without building a full internal team.

Job description, interview notes, and onboarding checklist

A solid job description helps you attract the right candidate and gives you a fair basis for the interview process. Keep it focused on responsibilities, skills, and the type of person who will succeed in the role.

Keep interview notes for each candidate and use a consistent approach to assessment. That helps you make a better decision and creates a clearer record of how you reached it. Once you have chosen your hire, a simple onboarding checklist will help you stay organised and make sure nothing is missed before day one.

For more practical guidance, you may also find our article on the onboarding checklist small businesses use helpful. It covers the everyday details that make a new starter feel expected and supported.

• Write a realistic job description based on the actual role.
• Use structured interview questions where possible.
• Keep notes on why you selected the successful candidate.
• Prepare a day one and week one checklist before they start.

Plan a simple but professional hiring process

Your hiring process does not need to be fancy, but it should be consistent. Start with a clear advert, decide who will review CVs, agree how interviews will be run, and make sure candidates are treated fairly throughout.

For small businesses, a simple process often works best: review applications, shortlist, interview, check references if needed, make an offer, and then complete onboarding. The more consistent the process, the easier it is to make a confident decision and explain it later if required.

• Agree who is involved at each stage.
• Use the same criteria for all candidates.
• Keep communication prompt and professional.
• Do not make verbal promises you are not ready to put in writing.

Set your new starter up for success in the first 30 days

The first month is where good hiring turns into good retention. Make sure your new starter knows what success looks like, who they report to, and how they fit into the wider team. A short induction, regular check-ins, and a few simple goals can make a big difference.

It also helps to have the practical things ready on day one: equipment, email access, workspace, systems logins, and a plan for training. New starters notice when the basics are organised, and it helps them feel confident quickly.

If you want help building a repeatable process, Flora HR can support with people processes and onboarding support so your first hire is not a one-off scramble every time you recruit.

• Prepare equipment, access, and paperwork before day one.
• Set clear expectations for the first week and first month.
• Schedule check-ins with the manager or founder.
• Make sure the new starter knows where to go for questions.

Common first-hire mistakes startups make and how to avoid them

One common mistake is hiring too quickly because the team is busy. That can lead to vague job scopes, poor fit, and avoidable turnover. Another is relying on a vague offer or an out-of-date contract, which can cause confusion from the start.

Startups also sometimes forget to complete right to work checks, delay PAYE setup, or assume a contractor arrangement is the same as employing someone. These issues are easier to prevent than to fix after the person has already started.

It is also easy to overlook onboarding. If you need a broader view of the people side of a growing business, our article on when a small business should outsource HR is a useful next read.

• Do not hire before the role is properly defined.
• Do not leave contracts and payroll until the last minute.
• Do not skip right to work checks.
• Do not assume onboarding will happen automatically.

When to get help with hiring, onboarding, and HR compliance

If you are hiring for the first time, it is normal to want reassurance that you are doing it properly. Support can be especially useful if you are setting up contracts, drafting policies, planning onboarding, or trying to balance hiring with everything else on your plate.

Flora HR helps UK startups and small businesses with outsourced HR support, recruitment and onboarding, and compliant people processes. That means you can get the practical help you need without taking on a full internal HR function before you are ready.

If your next step is to get the hiring process in place, you can contact Flora HR for a conversation about what you need and where to begin.