The Most Common HR Issues Companies Face When Scaling to a Larger Workforce

Key Takeaways

• HR problems when scaling rarely get recognized as “HR problems” until they have already caused damage. Revenue growing while profit shrinks, strong performers leaving continuously, founders unable to step back from daily operations. These are all HR symptoms.
• The most dangerous threshold is between 50 and 150 employees. At this stage, startup-era operations no longer work but professional systems haven’t been built yet. Most local Vietnamese businesses get stuck here.
• The 5 HR issues when scaling appear in a predictable sequence: hiring the wrong people, losing the best people at the worst time, middle managers becoming bottlenecks, people costs rising faster than productivity, and labor compliance lagging behind actual headcount.
• All 5 issues share a single root cause, and understanding that is the first step to solving the right problem instead of treating symptoms.

These 5 problems appear in most Vietnamese local businesses once they pass the 50-employee threshold, in roughly that order, and often at the same time. Not by coincidence, and not because the HR team suddenly becomes less capable. They appear because HR systems built for 30 people cannot support a team of 150, and that gap accumulates quietly until it is large enough to affect business performance.

This article breaks down each issue in the order it actually surfaces, the single root cause behind all of them, the real cost of leaving them unresolved, and how companies in the middle of scaling can address the right problems rather than just the most visible ones.

Growth Does Not Create HR Problems. It Only Reveals What Already Exists

At 20 to 30 people, HR can run on spreadsheets, informal agreements, and the founder’s personal judgment. Everything works, not because the system is good, but because the scale conceals structural gaps. At 30 people, incomplete contracts and reactive hiring don’t produce immediate consequences.

When the team reaches 80, 120, or 200 people, the same approach no longer holds. Not because the HR team is less capable. Organizational complexity grows exponentially while system capacity remains linear. Each person added is not just one more headcount to manage. It brings additional relationships, coordination requirements, compliance obligations, and expectations that need to be met.

What makes this phase dangerous is that companies rarely recognize it early. HR problems don’t appear as error messages or clear warnings. They show up as top performers resigning “out of nowhere,” people costs rising without obvious reason, or founders becoming busier despite having more people. By the time it’s recognized, the damage has been accumulating for months.

The most dangerous threshold is 50 to 150 employees. Startup-era operations are no longer fit for purpose, but professional systems haven’t been built yet. The three earliest warning signs are higher early-tenure resignation rates within the first three months, urgent hiring making up more than half of all open positions, and middle managers handling HR operations that should be handled by a dedicated HR function. When all three appear at once, the company is already in the danger zone, not approaching it.

5 HR Issues That Appear in This Exact Order When Companies Scale

These problems don’t appear at random and they don’t appear simultaneously. They follow a sequence, and understanding that sequence tells you where to intervene before the next problem appears.

Issue 1: Hiring More People Doesn’t Solve the Hiring Problem

The first issue to surface when scaling is recruitment that can’t keep pace with growth. The cause isn’t a shortage of talent in the market. It’s that the company is still hiring the way it did with 30 people when it now needs 150. 71% of employers in Vietnam report serious difficulty filling open positions (ManpowerGroup Global Talent Shortage Survey 2026). In that environment, companies without a structured recruitment process are at a structural disadvantage against multinationals competing for the same candidate pool.Hiring reactively, only after a seat becomes vacant, is slow, expensive, and puts the company in a permanently defensive position. The moment a role opens, pressure on the remaining team increases immediately, hiring quality drops because of urgency, and the cycle repeats. Companies break out of this cycle by shifting to building a strategic talent pipeline rather than waiting until a position opens before starting the search.

The cost of a bad hire isn’t just the cost of that hiring cycle. Every wrong hire requires the full cycle again: replacement cost, onboarding time, and lost team productivity during the transition. Understanding the true cost of recruitment is the first step to knowing when the approach needs to change.

Issue 2: Your Best People Leave Exactly When You Need Them Most

Shortly after the hiring problem appears, the retention problem follows. The company has just spent significant effort bringing good people in, only to lose them for reasons that were entirely preventable. What makes it harder is that the signals aren’t visible until the resignation letter lands.

The most common reason isn’t compensation. In 2025, “seeking career advancement” reached a record high as the primary driver of job changes, up 14 percentage points year-on-year (Talentnet-Mercer Total Remuneration Survey 2025). Companies without clear competency frameworks and promotion pathways are effectively pushing their best people to find those answers elsewhere.

At the same time, early-stage company culture is sustained by the founder’s direct presence. When headcount scales and the culture is not institutionalized, it quietly disappears. Strong performers leave without explaining why because the decision was made months earlier. Rising voluntary turnover at this stage is not coincidence. It is the accumulated result of not formalizing what worked at a smaller scale.

Issue 3: Middle Managers Become a Bottleneck Instead of a Growth Lever

The first two issues build pressure. The third is where that pressure becomes most visible. As a company grows from 50 to 150 people, middle managers must take on a completely different role: no longer the best individual performer, but the person who creates conditions for the team to perform well. Most aren’t prepared for that shift, and the result is that every decision continues to escalate to the founder.

The most common trap is promoting the strongest technical performer into a management role without assessing leadership capability and without a transition training plan. 60% of first-time managers receive no formal training before taking on their new role (DDI Global Leadership Forecast 2023). When this happens, the company loses both the technical expert placed in the wrong role and the team underneath being poorly managed. Teams with ineffective managers are 2.5 times more likely to resign than teams with strong managers (Gallup State of the Global Workplace 2024), and the effects typically appear within 6 to 12 months.

87% of businesses in Vietnam face serious challenges with succession planning, and 44% have no formal plan at all (Talentnet-Mercer 2025). Without a structured succession plan, when a key manager leaves the company has no one ready to step in and must start the entire process over.

Issue 4: People Costs Rise Faster Than Productivity

Once the first three issues have accumulated long enough, Issue 4 shows up on the financial reports. Headcount is up, payroll is up, but output is not rising in proportion. The root cause is rarely that people are performing worse. More often it is that the compensation structure and performance management system haven’t been redesigned for the new scale.

Salaries increasing based on tenure rather than performance, allowances not reviewed against actual role requirements, bonuses disconnected from specific business results. All of it compounds into a growing people cost that isn’t generating a corresponding return. When a company scales without updating its performance management system, the gap between people cost and value created widens and becomes harder to correct.

Issue 5: Labor Compliance Falls Behind Actual Headcount

This issue typically surfaces last, but carries the highest cost when it does. The company is operating at 150 people but its employment contracts, payroll structure, and social insurance processes were built for 30.

Vietnam’s labor law establishes different obligations based on headcount: companies with 10 or more employees must issue and register internal labor regulations with the labor management authority, alongside a formal salary scale. At 50 employees, trade union obligations increase significantly, including a mandatory 2% payroll contribution to the union fund calculated on the social insurance base (Labor Code 2019, Article 118; Acclime Vietnam HR Guide 2026). Companies that cross these thresholds without updating their obligations are accumulating legal risk without realizing it.

Late or incorrect social insurance contributions carry penalties of 12 to 15% of the outstanding amount, before back-payments and recruitment reputation effects are factored in (Decree 12/2022/ND-CP). But the larger cost is rarely the fine itself. An incorrect payroll erodes employee trust, and trust lost is very difficult to recover. Periodic HR compliance reviews give companies a way to identify gaps before an inspection does.

All 5 Issues Share a Single Root Cause

Looking back across these 5 problems, the obvious common thread is that they all involve people and HR processes. But the root cause runs deeper, and understanding it correctly is what makes the difference between solving the actual problem and continuing to treat symptoms one at a time.

All 5 issues come from the same place: HR systems built to serve the current headcount, not the headcount that’s coming. Companies add people based on business decisions, but the HR infrastructure to support those people gets deferred until a crisis forces action.

This pattern repeats across most local Vietnamese businesses scaling today, for a straightforward reason. In the early stages, business growth speed is always prioritized over internal systems development. That’s a rational trade-off at small scale. But past a certain threshold, the same approach starts generating compounding costs.

At 30 people, the founder’s personal judgment is enough to operate. They know everyone, handle each situation directly, and make decisions quickly. At 150 people, that same mechanism creates bottlenecks everywhere because decisions depend on one person instead of on a system. Decisions get slower, errors increase, and the founder is exhausted while still feeling like nothing is being done well enough.

The gap between the speed at which headcount grows and the speed at which HR systems are built is where all 5 issues above originate, and where they need to be resolved. Not by addressing each problem individually as it appears, but by closing that gap before the company reaches the next threshold.

The Consequences of Leaving HR Problems Unresolved

Understanding the root cause is one thing. Knowing when to act is another. The answer usually lies in looking directly at the real cost of delay.

Direct Costs That Can Be Measured

Replacing a mid-level manager costs on average 1.5 to 2 times their annual salary, including recruitment fees, onboarding time, and lost productivity during the transition. In manufacturing, each worker replacement runs to 3 to 5 months of salary. These are real, measurable costs, and they are only the visible part.

Over 40% of new hires in Vietnam consider leaving before their probation period ends, primarily due to weak onboarding or no visible development path (Talentnet-Mercer 2025). Every time that happens, the company doesn’t just lose the recruitment investment. The productivity clock resets from zero while the remaining team watches.

Indirect Costs That Take Longer to Appear

When middle managers lack the capability for their role, every decision escalates to the founder and the founder loses the capacity for strategic work. When payroll is inaccurate or opaque, employee trust erodes quietly well before the resignation letter is submitted. When labor compliance is left unattended, legal risk accumulates until an inspection or dispute forces it into the open.

These consequences don’t appear in the monthly report. They appear in the quarterly or annual review, by which point they’re much harder to reverse. And when they appear simultaneously, which they typically do since all 5 issues share a root cause, the company is no longer in a “needs HR improvement” situation. It is in a “losing operational control” situation.

How to Avoid All 5 Issues: Build HR Systems One Layer Ahead

Knowing what the problems are and knowing what to do about them are two different things. This section focuses on the latter: the practical priority sequence, not a complete checklist of everything that could be done.

The Core Principle: Build for the Scale You’re Approaching, Not the Scale You’re At

A company at 50 people needs to build HR infrastructure for 100 people. A company at 100 needs to build for 200. Not because those systems are needed immediately, but because the time required to build the right HR systems is always longer than the time it takes the company to grow to the point of needing them.

This is the difference between a company that scales with control and one that scales and then spends years firefighting. Both grow, but the operational cost and actual speed are completely different.

Three Decisions in Order, Not All at Once

First, shift recruitment from reactive to maintaining a continuous candidate pipeline. This decision addresses both the hiring problem and the retention problem simultaneously: companies with a strong pipeline hire faster, hire more accurately, and are less likely to keep the wrong people in roles just to fill a gap. A Talentnet survey of over 100 companies found that HR outsourcing reduces administrative HR workload by 40% and saves 20 to 30% on recruitment costs (Talentnet, 2024).

Second, invest in the middle management layer before they become the bottleneck. Assess management capability independently from technical performance before any promotion decision. Provide role-transition training immediately after. Build a formal succession plan for key positions. This is the decision that costs the most time to fix if done late, and the least if done early.

Third, review your compensation structure, performance management system, and labor compliance against your current headcount, not the headcount from two years ago. When you’ve recently crossed key thresholds (10 and 50 employees in particular), obligations need to be updated immediately. Contact Talentnet to design an HR operations roadmap that fits your current stage of growth.

Conclusion

HR problems when scaling don’t come from carelessness. They come from using the right tools at the wrong scale. Local Vietnamese businesses are scaling in an environment with an increasingly competitive talent market, evolving labor regulations, and greater operational pressure than ever before. Organizations that recognize the pattern early and build HR systems one layer ahead of their actual scale will grow faster, with fewer disruptions, and hold on to their best people during the most critical phase of that growth.Talentnet supports growing Vietnamese domestic businesses by addressing these five challenges at each stage of growth through HR outsourcing services. With Recruitment Process Outsourcing when hiring demand exceeds internal capacity, companies can scale recruitment at the right pace. Our HR Shared Services solution optimizes HR operations as headcount grows, without requiring full upfront investment. Contact Talentnet to design an HR roadmap suited to where your business is today.