PEO comparison center / ESI vs. Marsh McLennan Agency
ESI vs. Marsh McLennan Agency: Compare PEO Options
Marsh McLennan Agency (MMA) offers benefits and HR consulting, including a PEO consulting practice. ESI is a PEO provider. The comparison should distinguish an adviser helping you choose or evaluate a PEO from the provider operating the resulting services.
When researching Marsh McLennan Agency alternatives, define whether you need benefits advice, PEO selection assistance or ongoing employment administration. These roles may complement each other.
ESI vs. Marsh McLennan Agency at a Glance
Compare the proposed services and responsibilities. Open each buyer question for a practical next step.
| Comparison area | Marsh McLennan Agency | What to review with ESI |
|---|---|---|
RoleWho advises and who delivers the service?Name the contracting adviser and operating provider separately. | Benefits and HR consulting, including PEO advice. | Review ESI as the proposed PEO provider. |
PEO selectionWhat does the selection engagement include?Clarify the comparison process, providers considered and deliverables. | PEO placement and evaluation services. | Request a direct service proposal. |
PEO exitAre we evaluating a PEO exit or another PEO?Compare the complete post-transition arrangement, including every retained vendor. | PEO unbundling and transition consulting. | Review the proposed continuing PEO model. |
BenefitsWho owns plan strategy and administration?Separate strategic advice from enrollment, deductions and employee support. | Benefits consulting and related administration services. | Review plans and administrative scope. |
HR supportIs assistance project-based or ongoing?Ask for specific deliverables and escalation boundaries. | HR and HR technology consulting. | Confirm ongoing HR support roles. |
PayrollWhich company processes payroll?Identify the processor, approval owner and filing support in writing. | Depends on the selected operating arrangement. | Confirm ESI payroll responsibilities. |
TechnologyWhich systems are included in the proposal?Check the actual platform and package rather than relying on the adviser’s brand. | Technology consulting and selected service arrangements. | Demonstrate proposed tools and interfaces. |
CostsAre adviser and provider charges separated?Request fee and compensation disclosures where applicable and compare complete totals. | Include advisory and selected vendor costs. | Include PEO and retained-service costs. |
Published by ESI. Confirm current scope, availability, responsibilities and prices directly. Buyer questions are evaluation guidance.
Marsh McLennan Agency Alternatives to Add to Your Shortlist
Use these options as starting points for further evaluation. This is not a ranking; service models and responsibilities may differ.
- ESI PEO: Request a direct proposal for your ongoing PEO requirements.
- Alliant Insurance Services: Review the linked comparison and confirm the services relevant to your workforce.
- OneDigital: Review the linked comparison and confirm the services relevant to your workforce.
- Gallagher: Review the linked comparison and confirm the services relevant to your workforce.
What Is Marsh McLennan Agency?
Marsh McLennan Agency provides benefits and HR consulting and has a PEO consulting practice. Compare the specific advisory engagement and selected operating provider with ESI’s direct PEO proposal.
Why Businesses Compare ESI vs. Marsh McLennan Agency
Distinguish the Adviser From the PEO Provider
MMA’s PEO practice describes placement, evaluation, unbundling and ongoing consulting. That can help employers assess a PEO, but the service provider and advisory engagement still need to be identified separately.
Ask which organization will contract with you for payroll, benefits and HR administration. Compare that operating proposal with ESI rather than assuming the adviser itself performs every task.
Identify Each Provider’s Role
Separate advisory deliverables from the company operating payroll and HR services.
Evaluate the Full Arrangement After a PEO Exit
A PEO exit can involve assembling payroll, benefits, HR and insurance services through multiple providers. MMA lists unbundling support among its PEO consulting offerings.
If that is the route under consideration, build a complete responsibility and cost map. Compare it with a continuing PEO arrangement using the same employee needs and internal staffing assumptions.
Connect Benefits Strategy With Daily Administration
MMA’s benefits offering includes HR and technology consulting alongside benefit-program services. The useful comparison includes both program design and the routine work employees experience.
Clarify who handles enrollment, payroll deductions, employee questions and renewals. Keep any retained adviser’s role explicit when reviewing an ESI proposal.
Compare the Complete Arrangement
Include every vendor and internal task after a proposed transition.
How to Compare Total Costs
Separate consulting compensation from operating provider fees, benefit premiums, insurance and technology. For an unbundled arrangement, include every replacement service and internal role. Compare the same workforce, coverage assumptions and implementation requirements with ESI.
When Marsh McLennan Agency May Make Sense
MMA may fit when you want benefits expertise or assistance selecting, evaluating or exiting a PEO. That advisory need can be separate from the choice of operating provider.
When to Consider ESI PEO
Consider an ESI proposal when you want to evaluate ongoing payroll, HR, benefits and risk support together. Ask the proposed team to explain its responsibilities, escalation process and technology for your workforce. Confirm fit for your locations, industry and benefit needs before deciding.
How to Compare the Best Alternatives to Marsh McLennan Agency
- Define the problem. List the support, cost or workload issues prompting the review.
- Use one service brief. Share the same workforce locations, headcount and benefit priorities.
- Demonstrate daily work. Walk through onboarding, a payroll correction and an employee question.
- Assign responsibility. Record what your team, adviser and operating provider will do.
- Review written proposals. Compare costs, exclusions, renewal terms and implementation tasks.
Switching From Marsh McLennan Agency: A Practical Checklist
Identify which advisory and provider contracts change. Coordinate payroll and benefit dates, data access and communications. For an unbundled model, verify that each replacement service has an owner before ending the current arrangement.
- Review notice periods, renewal dates and outstanding obligations.
- Confirm payroll and benefit effective dates with the providers involved.
- Agree how historical records and employee documents will remain accessible.
- Name implementation owners and plan employee communications.
- Validate readiness before committing to a start date.
Frequently Asked Questions
Is MMA’s PEO consulting the same as a PEO contract?
No. A consulting engagement helps evaluate or manage arrangements; the operating PEO and its contract must be identified separately.
Does MMA help companies choose a PEO?
Its PEO practice lists placement, evaluation, unbundling and consulting services. Confirm the scope of the engagement you are offered.
What are the best Marsh McLennan Agency alternatives?
Compare advisers for benefits or selection work and direct providers for PEO administration. ESI can be evaluated for the latter scope.
Can an adviser remain involved with a PEO?
Potentially. Confirm the adviser’s role, provider coordination and compensation in the proposed arrangement.
What should a PEO exit comparison include?
Include payroll, benefits, HR, insurance, technology, implementation and internal staffing. Compare the full arrangement rather than one replacement fee.
Who would handle payroll?
Identify the actual operating provider in the proposal. The advisory brand alone does not establish the payroll scope.
What should be checked before changing services?
Review contracts, notice periods, benefit dates, payroll ownership, records and employee communications across all participating providers.
Is ESI the Right Option for Your Company?
Request ESI’s direct PEO proposal and compare it with the complete arrangement under review. Keep advisory services, provider responsibilities and retained costs visible.
Sources and Comparison Approach
Reviewed October 9, 2026. MMA employee benefits · MMA PEO consulting practice · ESI services.
Company names belong to their respective owners. Photos are illustrative.
