Best Practices for Getting Ahead of Q4 Headcount Planning
Podcast Overview
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Eric Guidice: Ladies and gentlemen, another wonderful episode of The Headcount Experts. Let me adjust this camera here. Another wonderful episode of The Headcount Experts. We are doing one on our own this time. No guests this week. It has been a while, but we have a good conversation ahead.
Chris Mannion: Yeah, we haven't had a good conversation for a while. It took us almost fifteen minutes to get going here.
Eric Guidice: Yeah, that's true. We do have some great guests coming up in the future. We have Craig Fisher from Rosendin coming up, legendary RecOps, to help continue the conversation of today's subject, which is headcount and Q4, the most unique time for most companies who run a calendar fiscal year. But we're here to talk to you about all the good stuff. I'm Eric Guidice, this is Chris Mannion, and this is The Headcount Experts. So let's dive into it. We have twenty days until Q4 starts. How are you prepping?
Chris Mannion: Yeah, I think trying to answer as many questions as possible right now. I think a lot of people, from what I am hearing, are just trying to figure out how next year is going to go. Because they are still on an annual cycle, and so this is a critical time of year where they are trying to figure out how many people we actually have this year, how many people we are going to land on by December thirty-first, and then what does that mean for our planning for next year? So a lot of teams are trying to do two things at once, which is always tricky.
Eric Guidice: Yeah, I am about to begin my Q4 cycle for people trying to get a headcount platform in for 2027, not realizing how long the deal, procurement, vendor process, implementation, and adoption take. So we give them a little incentive here. It is a big quarter for Headcount 365 since everyone is rushing into it. It is also a bit chaotic, which highlights what Q4 is for a lot of teams. It is the first time you are getting budget, you are trying to close out this year's plan, you have next year's plan to think about, and then towards the end you have to mash it all together, close your books, and launch as if it is not the same exact timeline as it was on the first day of the year.
I kind of chalk it up to a continuation. When I was a kid, I wrote the wrong date at the top of my paper in sixth grade for the first couple of weeks of January because it just doesn't stop. But it is a crazy time. We have a bunch of stuff to cover this episode: general advisory about how to approach common pitfalls that teams have when approaching Q4, how to actually make a realistic plan, and how to manage the expectations of those who want an output during this time versus what they are going to get. Where do you want to start?
Chris Mannion: Yeah, I think starting with the timing is probably the right approach here. Over the last few years, what I have found is that the busiest time for me, at least to answer questions and jump on quick engagements, is December and January. That is because the numbers have been locked in and now they are trying to figure out how they actually deliver against those numbers. Whereas I think if we can get in early enough to prompt setting those numbers with realistic expectations, then you can actually build a plan that is achievable and not get halfway through next year and realize that the plan was never achievable in the first place. And then everyone points fingers at who is to blame, which if you are an outside consultant, is probably that person, which is me.
Eric Guidice: Yeah, I want to do my next case study or two on that. I think that will be my focus, the preventative nature of good practice. You are going to cover this a little bit as it relates to recruiting capacity, but it is very easy to postpone, wait, and do just-in-time. If you make a small investment up front, the return is outsized over the course of time. Having something in place, having a process, and having your data strong going into the fourth quarter is much more valuable than what it costs to do so. I'm not trying to cannibalize the market or the need for consultants to scramble in December and January, but I am sure there is different work that they could use your services for if need be
Chris Mannion: Yeah, getting in early and actually putting the planning process in place and the monitoring, whether that is in Excel, using Headcount 365, or another internal tool that they may already have. It is important just to get those assumptions baked in early on. It really starts by looking at what has happened this year. It can be really helpful at the end of Q3 to take a look at where you are going to land, almost predict what is going to happen, and then that methodology of predicting feeds into what you are going to do in 2027. I think that is a really helpful practice to start now, rather than trying to both diagnose why you did not hit the numbers in 2026 and then figure out how you are actually going to hit the numbers in 2027 when the planning process was the same year over year.
Eric Guidice: So talk to me a little about timing. What are you looking at? It is September 10th as we record this. It will probably go out mid-month. What are you looking at as far as cutoffs? This is what I need to do by XYZ date, these are the commitments I am going to make, and what are the results? Talk to me about the timing part
Chris Mannion: Yeah, so one of the things that you often see as a response to falling short on revenue numbers is a big scramble at the last minute to figure out how we can throw money at the problem by maybe hiring more sales reps. You think about ramp time for sales reps, and maybe it is going to take a month or two to ramp them. Hiring someone at the end of September, you may get some productivity before the end of the year, and then they are in place for 2027.
What is often missed is how you actually build the pre-hiring ramp time, and that is where recruiting capacity comes in. When I am looking at how you actually scale a go-to-market org, for instance, what is the point at which you need that person to be at 100% capacity? How do you work backwards from that to the point at which you need to start hiring that person given time to hire? What is often missed is you only have a limited capacity within the recruiting team as well.
We keep mentioning Little's Law, but there is a finite number of roles that can be recruited at a given point in time. If you increase the number of roles, you increase the time it is going to take to fill all of those roles. So there are reprioritization exercises you can do there, but there are always these knock-on effects where if you are halfway through recruiting for one role and all of a sudden you turn that recruiter on to focus on something different, there is a good chance you are going to lose all the progress you made. It just compounds over time.
So what I am looking at here is what are the deadlines for actually having a req go live in order to get that person in seat even before the end of the year? If you work backwards from that for them to be productive, where do you need to fill the role in order to get the business returns you are expecting? That is a conversation that is very difficult to have because ultimately you could be in September and say, "We are not going to hit our revenue numbers, and these are the reasons why." I think it is a much safer bet to do it then than in December when you actually cannot turn it around and cannot prep for 2027. If you start hiring for a sales role in December, that is probably not going to be fully ramped until mid-2027, at which point you have lost half of the revenue opportunity for that year anyway. So there are some real cutoffs here. Generally with a two-month time to hire, if that req is not active by the end of October, they are not going to be in seat by the end of the fiscal year. I think that is one of the big callouts to make in terms of deadlines.
Eric Guidice: Yeah, a few episodes ago we had Eric Lynn, who gave us his idea of time to productivity. The most removed from the people aspect of how headcount works, you are purchasing revenue from sales folks, producing engineering capacity from engineers, purchasing hires per month from recruiters, but the day they start is not the day that they reach full capacity. So there is this time to productivity metric that is a super interesting finance metric.
In the Headcount 365 space, we track time in four stages. Closest to the start date is how long it takes for somebody to quit and start the job. In the US it is two weeks. There are some cultures where it is instant notice, and some that are many weeks or many months. Particularly for companies doing multi-country hiring, where one req can be in either location, this can significantly impact your time to productivity, especially if you have location period variance ranging from instant to many months. So that is one: time to fill and time to hire. Different folks have different definitions there, and I could go on a whole separate podcast about the standardization of terms in our industry.
The other thing is the time to approval: how long to get that job approved, start recruiting, and get it into the ATS. Does it have a job description and interview rubric? So there is all this prep time, which then leads into the constraints you are talking about. What stage of the recruiting process are the reqs a recruiter is working on in? If two recruiters have ten jobs each, and one has ten that are all at the very beginning of roles that have never existed before, that is a much different workload than someone who has an evenly distributed workload of roles at the beginning, middle, and offer cycle.
We are working on a lot with recruiter capacity algorithmically, first with headcount data, but second for things like candidate scarcity on LinkedIn, etc. Recruiting capacity that is not interviews and offers is utilized by the different reqs that you have. Last is the hiring manager's actual interview capacity. Sometimes you can have all the recruiters in the world, but you do not have enough people to interview candidates, and that can slow down your hiring as well.
In Q4, when you start to have timelines, France could be a three-month notice period. Even if you wanted to hire somebody today, it is not going to happen. You have all these different considerations to think about, and then it comes down to applying it. What are you thinking about when it comes to applying these different types of metrics to a headcount plan? How do you prioritize what reqs a recruiter is working on? How do you manage the expectations of your hiring clients? How do you give your recruiting team the confidence of, "Hey, you are performing well, even though it seems like the whole world is coming down on you right now"? How are you thinking about applying these different things when you are building your Q4 plan?
Chris Mannion: Yeah, I really like to start with the metrics because from there you can start to diagnose where the constraint is. You mentioned a few different constraints, even in the hiring window. If you fill the funnel and cannot interview the person because the interviewers are on a conference travel tour, you are not going to complete the hiring in a timely fashion. But there are all the other constraints as well that fall within it. Is there actually enough top of funnel for your new sales rep to work? Is there enough onboarding capacity to onboard them? Do you have enough laptops to even give the person a laptop when they join?
There are all these other variables that come in, so tracking the metrics at the start and understanding where your actual constraint is key. If the constraint is not necessarily in the number of people on the team, it is not even a headcount problem, so throwing headcount at it is not going to solve it. We see this quite often in recruiting teams where the recruiting team as a whole is not filling roles as quickly as possible, but adding more recruiters just reduces the efficiency of the overall team because you are changing the denominator of the number of recruiters you have. It is really important to start off with what we are trying to achieve and how we actually measure success in each of those areas, whether that is revenue, number of marketing qualified leads, or recruiting capacity overall.
Moving into the second thing I really wanted to touch on, the actual utilization of the people within the team. We focus a lot on recruiting because that controls the flow of people into an organization, and we do not really have as much control over people going out. Quite often, a fully utilized recruiting team is seen as a win. You go into Q4 and your team is at 90% or 95% capacity or utilization, and you think that is really great. But what we actually see is that once you pass about 80% capacity, because of the variability in the roles that need to be hired, the scheduling of interviews, the availability of candidates, and top of funnel sourcing, that capacity does not have any way to flex with the system.
So what you actually see is exponential growth in the time it takes to close these roles. One of the things we really push for is looking at capacity not as a goal to maximize, but as a goal to build around 80% so that you can flex the system a little bit and add more roles when you need to. That is where the prioritization comes in, but prioritization relies on constraints mapped out with metrics. Everything feeds together to make sure this is going to be successful. The point I am trying to make is that focusing solely on maximizing capacity and getting the most efficiency out of the team is probably not what is best for the business. I am probably not going to get into the weeds too much with Kingman's formula, but that is something I am pretty excited about because I do not think we have discussed it yet on the podcast, even though I have alluded to the challenge of reaching 100% capacity within a recruiting function.
Eric Guidice: Yeah, for most folks listening to this conversation, they have one to two team meetings left before Q4 goes crazy. Regardless of what theory says or the academic approach to headcount, the reality is someone is banging on the desk on the other side of the table asking recruiting to do whatever it is in Q4. The key is that we continue to press into how you leverage data to articulate the benefits of executing these principles. How do you show people capacity versus demand in relation to productivity or revenue over multiple years so that in 2027 Q4 or 2028 Q4, you have this dataset to come back to and say, "Look what happened when we did XYZ"?
For most leaders listening on the recruiting side, they are asking how to capture information today to have a better situation in the future, while also asking what to do right now to be prepared. The number one advice I give folks, whether on our platform or not, is to have the capacity versus demand meeting with your team and highlight the relationship between capacity and demand for both the recruiting team and the business. It allows you to do a few things. You can incentivize people for outsized results, which is more production, while telling the business the sacrifice of doing so. If my normal capacity is four and I am upping everybody to five, that is not free. We are going to take it from other parts of the business, whether experience or longer-term attrition, incurring debt or risk to hit this production number.
You need to be able to explain capacity versus demand using something like Kingman's formula to articulate why you are doing it and what you anticipate the results will be. Manage expectations beforehand so that as it is happening, you have that data point later when you go to do 2027 Q4. For me, it is always starting off with that capacity demand meeting, helping my team understand that relationship and my expectations, while giving the business the option to adjust those numbers knowing there is a downstream impact.
On the finance side, I am trying to get their buy-in as best I can before I have that meeting. You do not want to buy the car from the dealer; you want to buy it from the person driving the car. Have the finance team tell the rest of the business about ramp time and productivity, and then work backwards from those dates. If I am a recruiting leader in a scale-up now, everyone is clawing for their budget and trying to get what they can depending on culture around use-it-or-lose-it. That is the first meeting I would have. What else would you add to it?
Chris Mannion: Yeah, the priority list is becoming increasingly more important because the expectation is that recruiting can keep scaling without additional headcount, assuming capacity will be added by AI or whatever the next technology leap is. But actually understanding how the priority list changes based on how many reqs you are closing each month and your time to hire goes back to Little's Law formula. If we can close 10 reqs a month and time to hire is two months, then these are the 20 reqs we are prioritizing right now. In November, when someone asks to add five reqs to your workload, you can ask which five of the twenty active reqs to remove, or if capacity should be increased to hit 12 hires per month by adding cost to the recruiting team to deliver against that
Showing that is really helpful, but including utilization theory to show that increasing team utilization from 80% to 90% results in a three- to five-fold increase in time to hire reduces the overall number of reqs you can prioritize anyway. Intuitively, it is hard to understand, which is why mapping it out and looking historically at what happened gives real-life numbers. Last year, time to hire went from two months to three months, so roles were delayed and the business was impacted because we did not hire a temporary contractor to bolster recruiting capacity
There are trade-offs to understand, rather than assuming we can work the recruiting team extra hard for a month. Tech debt is well understood on engineering teams, but recruiting debt means you are not doing work that makes Q1 easier. You are not building top of funnel, talent pipelines, or talent communities to make the next fiscal year successful, because you are focused on Q4 when there is uncertainty about whether it will deliver against goals anyway.
Eric Guidice: Yeah, for Q4, I lean towards getting it done. There are two conversations a TA leader or finance leader is having today: one with the team trying to get results now. In times of urgency, people rarely care to understand the circumstances. They just say, "I need my hires now. Make it 25." An executive conversation needs to focus on what is possible and what happens when we push those trade-offs.
If every recruiter does one hire a month and spends the rest of their time building a great interview culture, candidate feedback, talent branding, talent pipeline, succession planning, HRBP work, and managing the headcount plan, bringing that to two, three, or four hires a month means subtracting something else. When pressing for capacity, the constraint might not be obvious. In my duality of leadership, I have all the data ready for the executive team in a QBR or planning meeting so we have data to stand on while offering solutions.
When I was at Bird as the 10th employee, we hired a thousand people in six months. I had to ask hiring managers to review top of funnel, explaining that our capacity was capped because they also had a full-time job managing interview capacity. Giving them opportunities to get involved, buying into the capacity demand forecast, having executive support for service minimums, and setting expectations ensures quality is maintained. Giving people an understanding of capacity demand builds advocacy for contractor budget or future recruiting resources.
Underlying principles like Little's Law, Kingman's formula, and capacity demand get attention during urgent times that you wouldn't get when things are smooth. It is a great time to build buy-in. That is one of the silver linings of Q4: people finally understand the complexity and limits of capacity. Infusing this pain into software helps people have this information at their fingertips.Chris Mannion: That is totally right. The way we talk sometimes sounds like coming into this from a vacuum, as if weekly meetings or QBRs haven't happened. One thing we did successfully was maintain a five-quarter plan. Every QBR, that five-quarter plan gets updated. Going into Q4, you have your Q4 plan alongside all four quarters for next year. When thinking about trade-offs, pulling capacity to increase hiring in Q4 might put a big Q2 launch priority at risk.
Framing decision constraints in their language is key so it isn't just "do more with what you have," but a collaborative effort to deliver against goals. I have seen creative solutions like hiring managers jumping in on sourcing sprints or pulling a Q2 req forward to hire an internal recruiter early. Finance is net neutral on role cost, and the best recruiting leaders use data and five-quarter vision to build trust rather than just hitting next quarter's goal.
Eric Guidice: If you are a recruiting leader going into Q4 for the first time, look at capacity versus demand as a benchmark for the rest of your tenure. It is your first real data point and opportunity to get buy-in on what the recruiting team is meant to do, service levels, production, team participation, and short- and long-term results. If it is your second, third, or fourth Q4, apply what you have been advocating for to develop a strategy for a complex time. In your QBR, look at what happened in Q4 to set expectations for what comes next. It is very easy to cut recruiters when there is no recruiting demand, leading to Q4s with outsized demand versus capacity due to short-term cost decisions. What is your take on recruiter staffing entering and exiting Q4?
Chris Mannion: It is good to frame it in terms of what the entire workforce plan looks like and why this decision comes up. Often, a target headcount cost set by the board or senior leadership needs to be hit by year-end. It is ultimately a profit and loss decision affecting business profitability, which is critical whether public or private. Lowering headcount reduces run rate to show the board numbers were hit. The easiest place to do that is cutting the recruiting team in December when hiring is slow. Then on January 1st, 50 reqs open for R&D or go-to-market goals, putting the 2027 revenue plan at risk.
Using a five-quarter plan helps evaluate how Q4 cuts impact the next fiscal year so decisions don't leave you spending three quarters pulling out of a ditch. Talking in these terms with FP&A frames it as a core business decision. Tactically, when a recruiting team has no active reqs, look ahead at metrics and build pipelines so you aren't launching 50 new reqs on January 1st with zero top of funnel. Fix problems, train interviewers, and design new case studies. Taking a step back to rebuild processes based on learnings positions the team to deliver against ultimate goals next year. Every year the same pattern repeats, damaging both the business and impacted individuals.
Eric Guidice: The first product I made in Headcount 365 was a capacity demand forecast, and more importantly, a capacity demand actuals report. In a Q1 meeting, you can show historical capacity and demand over time alongside changes and their impact. Combining that with a finance plan showing time to productivity and actual production tells a clear story year over year. We will dive deeper into this next week with Craig Fisher, Head of Talent Operations at Rosendin, who will share insights on using full-year and Q4 data to build an accurate 2027 headcount plan.
To wrap up, I have a couple of reactions for you, Chris. Let us start with Nicole Alonzo, Head of Growth at Windmill. They do AI performance reviews. She mentioned a big tech company stopping all non-edge hires from using AI until their manager approves, framing this around onboarding and fundamentals. Do you give new hires access to AI on day one, or use a non-AI training plan? What is your take?Chris Mannion: One big concern is attracting and retaining top talent. Candidates expect to use AI to improve day-to-day efficiency, whether college graduates who used it for four years or experienced professionals. Taking it away is like taking away Google search. I worry about getting the most out of people. Seeing how effective someone is before leveraging AI makes sense, as AI is an amplifier that makes good work 10x better and bad work 10x worse. But having clear AI governance across the workforce is a smarter approach than an all-or-nothing policy.
Eric Guidice: I love AI in onboarding, especially when hiring implementation support roles handling complex cross-functional systems. Setting up a queryable engineering database lets new hires get context before engaging team members, reducing onboarding time and helping them form perspectives. On the flip side, internal AI slop is a problem. We instituted a policy treating uncredited AI work like college plagiarism. AI is great for drafting content plans, but team members must cite it and take ownership. You have to be willing to enforce that policy.
Chris Mannion: Brian Halligan, founder of HubSpot, shared a rule at business school: make good decisions. You are responsible for the decisions you make and the output you produce. If you use AI and produce bad output, you are responsible for that output. People should be free to use available tools. Restricting tools is not a good way to onboard someone or set them up for success.
Eric Guidice: I prefer learning arithmetic before using a calculator, though complex problems require tools. Here is one more from Nick Wakefield, former Chief People Officer and now consultant at Trailhead Results. With major acquisitions in the HCM space like Silver Lake potentially taking Workday private, he warns against relying too heavily on an individual vendor. What is your take on acquisitions in the HCM space? How would it change your strategy?
Chris Mannion: I ask how this changes service levels and product roadmaps, and whether vendors will still meet core HRIS or ATS requirements. Teams should evaluate contracts at renewal rather than automatically renewing. For large companies, maintaining an updated requirements list is key. For smaller companies, cobbling together tools or using MCPs to interface directly with databases offers flexibility. Expectations for what vendors deliver should be higher.
Eric Guidice: Private equity plays in software will be interesting to watch as innovation forces prices down while allowing companies to build replacement tools. As a provider connecting HRIS and ATS systems, I am eagerly awaiting the outcome. Thanks to Nick Wakefield for sharing that insight. I am looking forward to our conversation with Craig Fisher next week. Anything to plug before we wrap up?
Chris Mannion: If anyone is in Baltimore at the SIOP Lean Edge Consortium at the end of the month, please say hello. I am presenting on applying supply chain principles to headcount and the impacts of AI. Hope to see you there.
Eric Guidice: The people supply chain with Chris Mannion! Don't miss it.
Chris Mannion: Trying to brand that down, whether it is Talent S&OP or People Supply Chain.
Eric Guidice: I always ask the audience what resonates, but I like "People Supply Chain." That is how I introduce you at happy hours. We will have more from Chris after the Baltimore expo, and Craig Fisher joining us in late September or early October. Great dishing on Q4 planning. That is all for now. Happy end of summer, everybody!
You can’t fix Q4 in Q4.
Attempting to fix Q4 revenue or capacity shortfalls by opening new roles in November or December is mathematically ineffective. The decisions you make late in the year do not determine how you finish Q4; they determine whether you start Q1 in an operational deficit. Great Q4 headcount outcomes are not achieved through late-quarter scrambles—they are the result of executing a plan set months in advance.
Here is what you will learn in this episode:
The Reality of Time-to-Productivity: Why working backward from start dates isn't enough—and how notice periods, approval cycles, and onboarding ramps dictate your true Q4 planning cutoffs.
Applying Kingman’s Formula to Recruiting: How queueing math proves that pushing recruiter utilization past 80% causes time-to-fill to compound exponentially rather than linearly.
Avoiding "Recruiting Debt": The financial and operational cost of end-of-year recruiter layoffs, and why short-term P&L cuts routinely compromise next year's revenue targets.
Bridging FP&A and Talent Acquisition: How to use rolling 5-quarter plans and capacity-versus-demand frameworks to negotiate realistic trade-offs with executives.
Hot Takes on AI and Vendor Risk: Industry commentary on setting practical AI policies during onboarding and navigating consolidation across enterprise HCM platforms
Concept Deep Dive: Kingman’s Formula for Recruiting
Originally published in 1961 by Sir John Kingman, Kingman's formula is an equation from queueing theory that calculates the average waiting time in a service system. It demonstrates mathematically that as a system's utilization approaches 100%, waiting times do not increase linearly, but rather they increase exponentially due to natural variability in the work. Often called the VUT equation, as it multiplies VARIABILITY in service time, UTILIZATION and TIME.
Why Does the Kingsman’s Formula Apply to Recruiter Capacity?
Recruiting is a queueing system: Open requisitions and candidates represent work waiting for recruiter time and attention.
High process variability: Recruitment involves constant, unpredictable variables, such as candidate availability, interview scheduling delays, hiring manager travel, and top-of-funnel sourcing fluctuations.
The 80% threshold: When recruiters are workload-planned at around 80% capacity, the remaining 20% acts as a buffer to absorb operational friction without stalling requisitions.
Exponential delays: Pushing recruiter utilization past 80% eliminates this buffer. Because there is no room to flex, even minor delays compound across every open role, causing time-to-fill to explode by 3x to 5x.
How Do I Apply It to My Q4 Headcount Process?
Model staffing around 80% utilization: Base your Q4 capacity plans on recruiters running at ~80% load rather than 100% theoretical output so the team can adapt to year-end hiring spikes.
Run a Capacity vs. Demand alignment meeting: Show Finance and executive leaders the visual curve of Kingman’s Formula. Demonstrate that assigning 5 extra requisitions to a fully loaded team will delay every active role in the pipeline rather than deliver faster hires.
Enforce clear operational trade-offs: When Q4 hiring demand exceeds your team’s 80% capacity threshold, explicitly reprioritize active requisitions or secure budget for temporary contractor support to protect system velocity.
Prevent "recruiting debt": Resist the urge to push recruiters to 100% capacity in Q4 to make short-term targets. Overloading the team starves talent pipelines and creates recruiting debt that jeopardizes hiring goals for Q1.
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