What Workforce Planning Actually Means

Workforce planning is the process of working out what people your organisation needs, when it needs them, and how it will get them there. That sounds straightforward, but in practice it covers a lot of ground: headcount, skills, timing, cost, and the shape of your team over the next six, twelve, or thirty-six months.

For a life sciences company, this matters more than in most sectors. Your regulatory timelines are fixed. Your clinical milestones do not move to suit a hiring backlog. The skills you need are often rare, and the consequences of getting it wrong, whether that means overhiring before a funding round closes or understaffing ahead of a pivotal study, can be genuinely serious.

Workforce planning is not the same as recruitment. Recruitment is what happens when you have already decided you need someone. Workforce planning is the thinking that happens before that, so you know what you need, why, and how it fits the bigger picture.

Why It Matters When You Are Growing Fast

Scaling companies tend to underinvest in workforce planning for understandable reasons. Everyone is busy. The focus is on science, product, or commercial traction. People decisions feel like something to sort out as you go.

The problem is that "as you go" has a cost. In life sciences, that cost can show up as:

  • A clinical operations team that is not ready when a trial starts
  • A regulatory affairs function built too late to hit a submission window
  • A commercial team hired ahead of approval that you then have to restructure
  • Duplicate roles created because two founders hired independently for the same gap
  • Salary expectations that were not modelled, leaving you with a budget shortfall mid-year

Growing fast amplifies every hiring decision. A poor hire at Series A is manageable. The same poor hire at Series B, when that person is now managing a team and sitting in leadership meetings, is a much larger problem to unpick.

Workforce planning gives you a structure for making these decisions deliberately rather than reactively.

The Risks of Skipping It

If you are scaling without a workforce plan, you are not necessarily doing nothing. You are planning, just loosely and often in your head. The risk is that implicit plans are harder to challenge, harder to share, and harder to update when things change.

Some of the most common risks we see:

Overhiring ahead of a milestone. Companies hire to be ready for a moment that then shifts. Without a plan, it is hard to see the exposure building until it is too late.

Skills gaps at critical moments. You might have enough people but not the right people. A headcount number tells you very little without a view of what those people can actually do.

Salary compression and equity problems. When hiring happens in bursts without a framework, you often end up with inconsistent pay bands, which creates retention problems later.

Founder dependency. In early-stage companies, one or two people often hold institutional knowledge that is never mapped or transferred. Workforce planning surfaces this as a risk.

Investor confidence. A credible people plan is increasingly something investors want to see. Being able to articulate your hiring roadmap, and the assumptions behind it, signals organisational maturity.

A Practical Framework for Life Sciences Workforce Planning

You do not need sophisticated software or a large HR team to do this well. You need a clear process and the discipline to revisit it regularly. Here is a framework that works for companies from Series A through to commercial stage.

Step One: Headcount Modelling

Start with what you know. Map your current team: roles, levels, functions, and whether each person is permanent, contract, or part-time. Then map what you have committed to, whether that is offers out, roles approved but not yet posted, or people joining in the next ninety days.

From there, build a forward view. For each function, ask:

  • What does this team need to look like in six months to deliver what we have committed to?
  • What does it need to look like in twelve to eighteen months if we hit our milestones?
  • What triggers a change in those numbers (a funding event, a regulatory decision, a partnership)?

Keep this simple. A spreadsheet with functions, current headcount, planned headcount at six and twelve months, and the assumptions behind each number is enough to start. The goal is not precision; it is shared visibility.

Step Two: Skills Mapping

Headcount tells you how many people. Skills mapping tells you what they can do and where the gaps are.

For a life sciences company, this means being specific about the capabilities that are genuinely critical to your next phase. That might be:

  • GMP manufacturing experience if you are moving into process development
  • Medical affairs expertise if you are approaching launch
  • Health economics capability if you are building a market access case
  • Bioinformatics or data science skills if your platform depends on them

Map what you have against what you need. Be honest about where you are relying on one person, where you have no internal capability at all, and where you are planning to use consultants or CROs as a bridge. Each of those is a workforce decision, even if it does not show up in your headcount.

Step Three: Scenario Planning

Life sciences companies operate under genuine uncertainty. Trials fail. Funding rounds take longer than expected. Partnerships fall through. Regulatory timelines shift.

Scenario planning means building at least two or three versions of your hiring roadmap based on different outcomes. A common approach is:

  • Base case: Your current plan, assuming milestones are hit broadly on time
  • Slower case: What if a key milestone slips by six months? What hiring can be deferred, and what cannot?
  • Accelerated case: What if you close a larger round than expected, or a partnership accelerates your timeline? What would you need to hire, and how quickly could you do it?

This is not about predicting the future. It is about making sure you have thought through the people implications of the scenarios that are genuinely possible, so you are not starting from scratch when one of them happens.

Step Four: Budgeting

People costs are usually the largest line in a life sciences company's budget. Workforce planning and financial planning need to be done together, not in sequence.

For each role in your plan, you need a realistic salary range, employer on-costs (National Insurance, pension, benefits), and any associated costs such as recruitment fees, onboarding, or equipment. If you are using contractors or CROs as part of your workforce strategy, those costs belong in this view too.

Build your people budget bottom-up from the plan, then stress-test it against your runway. If your hiring plan assumes eighteen months of runway but your current burn rate gives you fourteen, that is a conversation to have now, not in six months.

How Workforce Planning Changes by Funding Stage

The right level of workforce planning changes as your company grows. Here is a rough guide:

Pre-seed and seed: Your workforce plan is essentially a founding team plan. Who do you need around the table to get to your next milestone? What can you do in-house versus with advisors or consultants? The focus is on critical skills and keeping burn low.

Series A: This is where workforce planning starts to matter structurally. You are probably hiring your first functional leads, building out a leadership team, and making decisions that will shape the culture and structure of the company for years. A clear plan for the next twelve to eighteen months, with headcount and skills mapped to your clinical or commercial milestones, is genuinely useful here.

Series B and beyond: At this stage, workforce planning becomes a core operational discipline. You may be hiring across multiple functions simultaneously, potentially in multiple geographies. You need a plan that is owned, updated regularly, and connected to your financial model. HR or people leadership should be involved in building it, not just executing it.

Common Mistakes to Avoid

Even companies that do workforce planning well can fall into familiar traps. The ones we see most often:

  • Planning in silos. Finance builds the budget, the CEO makes hiring decisions, and HR fills the roles. Nobody has the full picture.
  • Treating the plan as fixed. A workforce plan should be a living document, reviewed quarterly at minimum and updated when assumptions change.
  • Copying other companies' structures. What works for a similar-stage company in a different therapeutic area or business model may not work for you. Build from your own strategy.
  • Underestimating time to hire. Senior and specialist roles in life sciences can take four to six months to fill. If you need someone in post by a particular date, work backwards from there.
  • Ignoring retention. A workforce plan that focuses only on hiring and ignores what keeps your existing team engaged is only doing half the job.

How to Start

If you do not have a workforce plan, the best time to build one is now, not after the next funding round or the next milestone.

Start with a half-day session with your leadership team. Map your current team, agree on your milestones for the next twelve months, and identify the three or four roles or capabilities that are most critical to hitting them. That is the beginning of a plan.

From there, you can add the detail: headcount modelling, skills mapping, scenario planning, and budget alignment. It does not need to be perfect. It needs to be shared, honest, and revisited.

At Sajawo, we work with life sciences companies at every stage of growth to build people strategies that are practical, connected to the business, and genuinely useful. If you are thinking about your workforce plan and would find it helpful to talk it through, we are always happy to have that conversation.