Cost-Containment Strategies by Employer Size: Small-Group vs. Large-Group

Managing employee health benefits is a pressing challenge for employers, regardless of industry or headcount. Costs may rise, carrier renewals can come with unwanted surprises, and the responsibility to protect budget and benefits packages can continue to grow. The available strategies to address these issues aren't uniform and can be easily overlooked, and choosing the right approach often depends on employer size.

A 35-person company and a 350-person company will typically face different risk structures. This can also extend to different levels of leverage with carriers and very different toolboxes for managing healthcare costs. Here is your segmented playbook for cost-containment strategies by employer size, including small-group and large-group approaches and strategies that work for both.

Small-Group Health Insurance Strategies

This category is often most relevant for employers with fewer than 100 employees. For brokers developing small-group health insurance strategies, the options have expanded, even though the toolbox still looks different from that available to larger employers. These groups tend to be fully insured, which means they carry less negotiating leverage with carriers.

Small-group plans may experience sharper proportional premium increases at renewal than their larger counterparts, but this will depend on the specific situation. If you want a broad overview of healthcare cost-containment strategies before diving into the size-specific decision, our guide covers the key details you'll need.

Layering a MERP Onto a Fully Insured Plan

Layering a Medical Expense Reimbursement Plan (MERP) onto a fully insured plan can be a practical way for small employers to find potential savings without switching carriers. The employer first selects a plan with a higher deductible to lower premium costs, then adds a MERP on top so employees are reimbursed for the increased out-of-pocket exposure.

This combination, often called a deductible buy-down strategy, can result in lower fixed premiums for the employer, while maintaining the coverage employees are used to. A MERP layered onto a fully insured plan gives small employers several distinct advantages over a traditional Health Reimbursement Arrangement (HRA):

• Plan designs from one carrier plan: Unlike a traditional HRA, a MERP typically allows multiple member plan designs to be built from a single underlying carrier plan. This gives employers some added flexibility without needing several carrier contracts.
• Shared cost structure: The full cost of a MERP can be shared between the employer and employees through Premium Equivalent Rates, an option that a traditional HRA doesn't allow.
• Carrier flexibility: A MERP gives employers the freedom to move to different carriers and alter plan designs as needed, while a carrier-integrated HRA makes that kind of flexibility much harder to achieve.

A MERP for small businesses can be structured to reimburse employees for deductibles, copays, and other qualifying expenses. This method can make a higher-deductible plan feel like a low-deductible plan to employees.

Level-Funded Plans

Level-funded plans offer a hybrid option for small- to midsized employers. They typically suit employers who want more cost control than a fully insured plan but aren't yet ready for full self-funding. A level-funded health plan combines a fixed monthly payment structure with stop-loss protection and the potential for a surplus refund. For employers, this means having more predictability without assuming the full risk of self-funding.

While specifics will vary, level-funded arrangements are typically built around three structural features:

• Predictable monthly payments: Employers pay a set monthly amount that bundles expected claims funding, administrative costs, and stop-loss coverage for more predictable budgeting than traditional self-funding.
• Stop-loss protection: Stop-loss coverage caps the employer's exposure to catastrophic claims, limiting financial risk.
• Potential surplus refund: If claims come in below projections, the employer may receive a refund of the unused portion.
  

A 2025 employer health benefits survey showed that 37% of covered workers at small firms were enrolled in a level-funded plan. Analysis also suggests that healthier small groups may be increasingly drawn to level-funded arrangements. This is commonly attributed to the structure of these plans, since pricing usually reflects a group's own claims experience rather than the broader fully insured risk pool.

Premium Only Plans and Section 125 Arrangements

A Premium Only Plan (POP) is a Section 125 arrangement that lets employees pay their share of group insurance premiums with pretax dollars. This reduces the employer's taxable payroll, lowering obligations for the Federal Insurance Contributions Act (FICA) and the Federal Unemployment Tax Act (FUTA). It can also potentially increase employees' net take-home pay because their premium contributions are no longer subject to income tax.

A POP is a simple, low-barrier-to-entry cost-containment tool for small employers. It doesn't require changes to the underlying health plan, the carrier relationship, or the existing benefits, which makes a POP an easy first step for employers who aren't ready for a larger strategic shift.

For brokers working with small groups, a POP can be a straightforward way to introduce the idea of structuring benefits more efficiently. This can be done before recommending a larger change, such as a MERP layer or a level-funded plan.

Large-Group Health Insurance Strategies

Large-group health insurance strategies tend to center on a single fundamental shift. They typically move away from a fully insured arrangement, in which the carrier controls the plan and retains any surplus, toward a structure in which the employer takes on more control, more risk, and more of the upside. Large-group health coverage strategies are often relevant for employers with 100 or more employees.

Around 80% of covered workers at large firms are enrolled in self-funded plans, reflecting just how standard this shift has become. Larger employers generally have more tools available, more data to work with, and greater leverage in carrier negotiations. But it's important to recognize that cost containment at this scale still requires an intentional strategy, rather than a passive acceptance of renewal terms.

Self-Funded Plans and Stop-Loss Protection

Self-funding is the baseline large-group cost containment strategy. Rather than paying a carrier a fixed premium to assume the risk, the employer pays claims directly out of its own funds. Brokers who want a deeper look at how these arrangements work can review this complete guide to self-funding before advising clients.

Moving to a self-funded model gives large employers several key advantages:

• Direct claims payment: The employer pays claims directly and retains any unspent funds at year-end, rather than paying a fixed premium to a carrier that keeps the surplus.
• Utilization visibility: Self-funding provides employers with visibility into plan utilization data. This can support more informed decisions about plan design and vendor partnerships.
• Custom plan design: Employers can customize plan design around their workforce's specific demographics and needs, rather than accepting a standard carrier template.
• Stop-loss protection: Employers can also pair stop-loss insurance with their self-funded plan to manage the risk of high-cost claims.

Most self-funded employers purchase specific and aggregate stop-loss coverage to cap their exposure. Specific stop-loss covers individual high-cost claims, while aggregate stop-loss caps total plan liability for the year, giving the employer predictable guardrails around an otherwise variable risk.

A MERP can also layer into a self-funded arrangement, giving large employers the same flexible plan design benefit it provides at the small-group level.

Utilization Management and Claims Data

Utilization management is the large-group advantage that becomes available once an employer has access to its own claims data. Real-time data allows employers and their brokers to identify cost drivers, such as high emergency room utilization, specialty drug spend, and preventable hospital admissions. Instead of always reacting to these cost drivers afterward, employers can adjust before renewal.

With that data in hand, employers can put practical tools to work. This can include prior authorization programs, care navigation services, disease management vendors, and wellness incentives designed to address cost drivers reflected in claims. A survey by the National Alliance for Healthcare Purchaser Coalitions found that employers with full access to claims data were more likely to use advanced cost-containment strategies.

Data access, in other words, tends to be the gateway to more advanced strategies rather than the other way around.

Reference-Based Pricing and Direct Contracting

Reference-based pricing offers an alternative to traditional network pricing. Instead of relying on discounts negotiated off billed charges, the plan pays providers a set percentage of a benchmark rate, commonly a percentage of Medicare rates. Direct contracting takes this a step further, in which large employers negotiate directly with health systems.

This type of negotiation will usually include defined services, fixed pricing for high-cost episodes of care, and bypassing the traditional carrier network for those specific services. Both strategies are typically available to self-funded employers, since they require the plan flexibility that comes with self-funding rather than a standard fully insured contract.

Strategies That Work Across Both Employer Sizes

Some strategies and principles apply regardless of whether a client has 40 or 400 employees. These approaches are less about fully insured versus self-funded or small versus large, and more about the underlying discipline of cost containment at any size. This is also where The Difference Card's MERP-based approach can help, since it scales from a small employer layering onto a fully insured plan up to a large self-funded group managing its own utilization data.

The key difference here is not whether these strategies apply, but how they are structured based on the employer's size, funding model, and available claims data.

Custom Plan Design

Custom plan design can be a valuable cost-containment tool, regardless of employer size. Rather than accepting an off-the-shelf carrier plan, it means aligning the plan structure to an employer's actual workforce demographics and utilization patterns. The key levers include cost-sharing models, benefit design choices, and layering tools, such as a MERP, to give employers precise control over their claims exposure.

A MERP fits naturally into this picture, since it allows multiple plan designs to be built from a single underlying carrier plan. This gives both small and large employers a level of flexibility that a traditional HRA typically can't match.

Year-Round Plan Management vs. Reactive Renewals

A reactive renewal approach means reviewing costs once a year, when the carrier sends a renewal notice, and responding to whatever number comes back. A proactive, year-round approach looks very different. It means monitoring claims data throughout the plan year, working with vendors who can demonstrate measurable return on investment, and reviewing plan design well before renewal pressure arrives rather than during it.

This distinction applies to employers of every size. A 30-person company and a 3,000-person company both benefit from making strategic decisions year-round instead of waiting until renewal season forces a reaction. This is also the model behind The Difference Card's approach, where every client works with a dedicated account manager who supports this kind of ongoing engagement rather than a once-a-year conversation.

How to Match the Right Strategy to Your Client

Matching the right cost containment strategy to the right client starts with understanding where that employer falls on the size spectrum. Employer size thresholds vary by state, so always confirm the applicable small-group and large-group definitions for your client's market before recommending a funding strategy.

• Fewer than 50 employees: A fully insured plan with a MERP layer, plus a Premium Only Plan to reduce payroll taxes.
• 50 to 99 employees: A level-funded plan with stop-loss, with a MERP added for extra employee cost protection.
• 100 to 249 employees: A self-funded plan with stop-loss and utilization management, where a MERP adds plan design flexibility.
• 250 or more employees: Same as for 100+ employees, plus reference-based pricing and direct contracting for high-cost services.

The Difference Card's MERP solution supports every tier on this list, scaling from a simple fully insured layer to a full self-funded program. For a deeper look at how to build out a cost containment pitch for any client, see our guide on cost-saving strategies for brokers.

Find the Right Cost Containment Strategy With The Difference Card

Whether a client is a small employer navigating a sharper-than-expected renewal increase or a large group ready to explore self-funding, matching the right strategy to the right size is essential. The Difference Card's MERP solution scales across fully insured, level-funded, and self-funded arrangements. This helps brokers by providing a single flexible tool that adapts to nearly any client situation.

Every client also gets access to The Difference Guarantee, backed by an A-rated division of Assurant. We also provide a dedicated account manager who offers ongoing support, not just an annual renewal conversation. Since 2001, The Difference Card has delivered an average net savings of 18% for its clients, with claims processed within two business days.

With more than $1 billion in documented client savings, our track record reflects how well this kind of custom design works across employer sizes. Contact The Difference Card to find the right healthcare cost-containment strategies for any client, of any size.