People ops for Irish scale-ups
Reviewed by Mellow Editorial Team, HR & payroll content team
Running people operations well is the difference between a scale-up that retains strong hires and one that loses them to process failures, compliance gaps or a poor manager experience. Here is what to build, roughly in the order it matters.
Get the employment basics right before you grow
Every person you add creates a legal and administrative obligation. Before hiring number five, or certainly number ten, you need:
- Written contracts that reflect Irish employment law — fixed-term vs permanent, notice periods, probation clauses, IP ownership and confidentiality.
- A registered employer with Revenue. You cannot run PAYE legally without this.
- Real-time payroll submissions filed to Revenue via ROS on or before each payday. This is a hard requirement, not a soft deadline. Miss it and you face interest and penalties.
- Statutory leave correctly tracked. Employees in Ireland are entitled to four working weeks of annual leave. Add public holidays, maternity and paternity leave, and sick leave under the Sick Leave Act.
Getting these foundations right is not glamorous, but a scale-up that skips them will spend senior time fixing compliance problems instead of building product or pipeline.
Build a payroll process that can handle headcount growth
Irish payroll looks simple at low headcount. It gets complex fast as you add different roles, salary sacrifice arrangements, share schemes, or employees in multiple countries.
The core mechanics:
- Income tax runs at 20% on earnings up to roughly €44,000 for a single person, and 40% above that. Critically, Ireland uses tax credits rather than a personal allowance, so the gross-to-net calculation works differently from the UK.
- USC is charged in bands: 0.5%, 2%, 3% and 8%. Most employees pay across several bands simultaneously.
- PRSI Class A applies to most employees — currently around 4.1% for the employee and 11.15% for the employer. Employer PRSI is a real cost to model into your hiring budget.
At around twenty employees, most founders find they need either a dedicated payroll resource or a platform that handles submissions automatically. Manual spreadsheets that worked at five people become a liability at twenty.
One consideration worth planning for now: pension auto-enrolment under the government's My Future Fund scheme is being introduced from 2026. This will require employers to enrol eligible employees automatically and make matching contributions. If you are budgeting headcount costs for the next two to three years, factor this in.
Build manager infrastructure, not just HR policy
Most people ops failures at scale-ups are not policy failures. They are manager failures — unclear expectations, no feedback culture, inconsistent application of decisions on pay or promotion.
Before you have a dedicated HR lead, the founder or COO typically acts as the people function. That works up to a point. The transition that matters is building manager capability before you need it:
- Define what good management looks like in your company, and write it down.
- Give managers a simple framework for one-to-ones, performance conversations and how to raise a people issue.
- Document how pay decisions get made. Inconsistency here is one of the fastest ways to create resentment in a small team.
When you do hire your first HR or people ops person, their first job should be to formalise what already works — not to import a process from a previous employer that does not fit your culture.
Think carefully about how you classify and pay people
Scale-ups often hire a mix of employees, contractors and part-time staff. Each classification carries different obligations.
A contractor who works exclusively for you, uses your equipment and follows your direction is likely an employee in Revenue's eyes regardless of what the contract says. Misclassification creates backdated PRSI and tax liabilities that can be significant.
For employees, your total employment cost is salary plus employer PRSI at roughly 11.15%, plus any benefits you offer. For senior hires, share options under the Key Employee Engagement Programme (KEEP) can be an effective way to offer equity with favourable tax treatment. The rules are specific, so take qualified advice before using it.
If you hire internationally — even one person in the UK, Europe or elsewhere — you enter a different compliance environment entirely. That person's local employment law applies. How Mellow runs payroll across six countries on one platform covers what that typically involves.
When to hire your first dedicated people ops person
The honest answer: most Irish scale-ups hire their first people ops hire about one hiring cycle too late.
A useful rule of thumb — when you are spending more than half a day a week on HR, payroll queries, compliance questions and people issues, you have already reached the point where a dedicated person would have paid for themselves. At around thirty to forty employees, a part-time or full-time people ops hire is almost always justified on time savings alone, before you count the reduction in compliance risk and the improvement in how candidates and employees experience your company.
The role does not need to be a senior CHRO hire. A strong generalist who understands Irish employment law, can run or oversee payroll, and can build simple, effective processes will deliver more value at this stage than an expensive specialist.
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