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Employment WorkforceTop 10 Best Employee Retention Services of 2026
Compare the top Employee Retention Services providers and ranking picks, featuring Mercer, Aon, and Deloitte. Explore options now.
How we ranked these tools
Core product claims cross-referenced against official documentation, changelogs, and independent technical reviews.
Analyzed video reviews and hundreds of written evaluations to capture real-world user experiences with each tool.
AI persona simulations modeled how different user types would experience each tool across common use cases and workflows.
Final rankings reviewed and approved by our editorial team with authority to override AI-generated scores based on domain expertise.
Score: Features 40% · Ease 30% · Value 30%
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Editor’s top 3 picks
Three quick recommendations before you dive into the full comparison below — each one leads on a different dimension.
Mercer
Turnover and retention analytics tied to compensation, performance, and workforce planning decisions
Built for organizations needing analytics-driven retention strategy and rewards-aligned execution support.
Aon
Editor pickTalent and rewards consulting using benchmarking and workforce analytics to target attrition causes
Built for enterprises needing data-led retention and rewards strategy across multiple regions.
Deloitte
Editor pickAttrition analytics integrated with workforce planning and HR operating model design
Built for large enterprises needing retention programs plus HR transformation and analytics.
Related reading
Comparison Table
This comparison table reviews employee retention services from Mercer, Aon, Deloitte, PwC, Korn Ferry, and other major providers. It contrasts how each vendor designs retention programs, measures workforce risks, and delivers analytics, surveys, and talent strategy across different industries and company sizes. Readers can use the table to compare service scope and engagement models alongside the capabilities that typically drive retention outcomes.
Mercer
enterprise_vendorProvides employee retention advisory services through workforce strategy, talent and rewards consulting, and organization effectiveness programs.
Turnover and retention analytics tied to compensation, performance, and workforce planning decisions
Mercer distinguishes itself with retention solutions built around rigorous labor market research and measurable workforce analytics. The service supports executive decision-making through talent, rewards, and people analytics that translate directly into retention strategies.
Mercer also connects retention to organization design, compensation programs, and performance frameworks to reduce avoidable turnover risks. Engagement typically includes data-led diagnostic work, tailored program design, and implementation guidance for HR and business leaders.
- +Evidence-led retention strategy using workforce and labor market analytics
- +Integrates rewards, performance, and organization design for retention outcomes
- +Strong executive alignment support through decision-focused talent reporting
- +Provides structured diagnostic-to-action process for turnover drivers
- –Requires high-quality HR and workforce data for best results
- –Engagement cycles can be intensive for small HR teams
- –Program design depth may exceed needs for simple retention issues
Best for: Organizations needing analytics-driven retention strategy and rewards-aligned execution support
More related reading
Aon
enterprise_vendorOffers talent, rewards, and human capital consulting that supports retention through engagement analytics and workforce transformation programs.
Talent and rewards consulting using benchmarking and workforce analytics to target attrition causes
Aon stands out for applying global HR analytics and benefits expertise to retention strategy across multinational workforces. Core capabilities include workforce planning, talent and rewards consulting, and employee experience diagnostics tied to measurable outcomes.
Aon also supports incentive design and change management to reduce attrition drivers like pay inequity and role misalignment. Retention programs are delivered through consulting engagements that combine data, benchmarking, and executive-level guidance.
- +Global workforce analytics links retention risk to specific organizational drivers
- +Benefits and rewards consulting strengthens retention through incentive and equity design
- +Benchmarking supports targeted interventions across roles, regions, and job families
- +Change management helps sustain retention policies during org and policy shifts
- –Engagement-based delivery can require significant internal stakeholder coordination
- –Retention outcomes depend on data quality from HRIS and HR master records
- –Program customization can extend timelines compared with lighter-touch vendors
- –Specialized consulting focus may not fit teams seeking rapid self-serve tools
Best for: Enterprises needing data-led retention and rewards strategy across multiple regions
Deloitte
enterprise_vendorProvides human capital and talent transformation consulting that targets retention drivers across culture, leadership, and workforce programs.
Attrition analytics integrated with workforce planning and HR operating model design
Deloitte stands out for delivering employee retention programs tied to enterprise HR operating models and measurable workforce outcomes. The firm blends retention analytics, workforce planning, and leadership capability development to address drivers like engagement, mobility, and performance.
Deloitte also supports transformation work across talent strategy, change management, and HR process design. Programs commonly combine data governance, stakeholder operating rhythms, and executive reporting to sustain retention improvements.
- +Retention strategy linked to measurable workforce and engagement outcomes
- +Advanced analytics for attrition drivers, segmentation, and workforce planning
- +Strong leadership and change management for adoption across HR and business
- –Enterprise-scale approach can feel heavy for smaller HR teams
- –Implementation depends on client data readiness and HR process alignment
- –Customization breadth can increase program governance complexity
Best for: Large enterprises needing retention programs plus HR transformation and analytics
PwC
enterprise_vendorDelivers workforce strategy and HR transformation services that address retention risks through operating model design and talent analytics.
Workforce talent risk diagnostics paired with measurable retention program roadmaps
PwC stands out for combining HR advisory with enterprise transformation delivery for complex retention challenges across large organizations. It supports workforce strategy, talent risk diagnostics, and retention program design that ties to business objectives.
Delivery often includes analytics, operating model redesign, and change management for HR processes and leadership practices. It also brings cross-functional expertise across compensation, benefits, workforce planning, and employee experience initiatives.
- +Retention strategy tied to workforce analytics and measurable talent risk
- +Strong change management for leadership behaviors and HR operating models
- +Integrated advisory across compensation, workforce planning, and employee experience
- –Best fit for large programs with significant internal stakeholders
- –Design work can be heavier than lightweight retention pilots
- –Implementation timelines depend on data readiness and organizational alignment
Best for: Large enterprises needing analytics-led retention programs and change management support
Korn Ferry
enterprise_vendorCombines executive talent, leadership development, and organization advisory services to reduce attrition and strengthen retention.
Leadership development and succession planning integrated with organization design and talent strategy.
Korn Ferry stands out for pairing leadership and talent advisory with measurable talent practices tied to retention outcomes. Core capabilities include talent strategy, leadership development, succession planning, and organization design that reduce preventable turnover drivers.
The firm also supports compensation, benefits, and performance alignment to strengthen retention by improving internal mobility and engagement. Korn Ferry delivers through consulting engagements that combine diagnostic work with executive-facing change support.
- +Retention-focused talent strategy linked to leadership and organizational design
- +Strong succession planning and internal mobility programs for role continuity
- +Leadership development services aligned to performance and retention goals
- +Executive-level change support for adoption of retention initiatives
- –Best fit for organizations ready for senior-led transformation efforts
- –Less suitable for teams needing purely self-serve employee tooling
- –Engagement approach can feel heavy for small, narrow retention problems
Best for: Enterprises needing consulting-led retention programs across leadership and succession.
Gallup
enterprise_vendorDelivers employee engagement and Q12-style measurement services used to identify retention drivers and improve workplace outcomes.
Q12 engagement items mapped to business outcomes via Gallup analytics
Gallup stands out for retention insights grounded in large-scale workforce research and scientifically developed survey methods. Its core capabilities include employee engagement measurement, analytics that link attitudes to outcomes, and guidance for managers and leaders to improve retention drivers. Gallup also supports organizational action planning through structured consulting based on survey results and role-level effectiveness patterns.
- +Research-backed engagement and retention models with practical organizational action guidance.
- +Strength of analytics connects employee perceptions to measurable business outcomes.
- +Manager-focused improvement recommendations translate survey data into behaviors.
- –Most value depends on high survey participation and data quality.
- –Engagement programs can feel generic without tight alignment to specific roles.
Best for: Organizations needing research-driven engagement measurement and retention improvement programs
BCG (Boston Consulting Group)
enterprise_vendorSupports retention and workforce effectiveness through people and organization transformations grounded in talent strategy and change delivery.
Workforce and employee-experience analytics integrated into organization and talent transformation programs
BCG stands out for its top-tier strategy and transformation work tied to workforce outcomes, not just HR tooling. Core capabilities include talent and org design, workforce analytics, employee experience diagnostics, and large-scale change programs.
It also supports retention through leadership and performance management redesign, engagement measurement, and operating-model implementation across business units. Delivery typically centers on executive advisory, data-driven problem solving, and multi-stakeholder program management.
- +Strong talent and operating-model redesign linked to retention outcomes
- +Deep workforce analytics for engagement and attrition root-cause diagnosis
- +Proven large-scale transformation support across multiple business units
- –Engagement work can be strategy-heavy versus hands-on HR execution
- –Retention interventions require sustained leadership sponsorship to stick
- –Requires access to HR data and stakeholder time to deliver quickly
Best for: Enterprise HR leaders needing strategy and change programs to reduce attrition
Mercer Marsh Benefits
enterprise_vendorProvides benefits and workforce solutions that support retention by aligning rewards design, wellbeing, and employee value propositions.
Total rewards and workforce analytics used to optimize retention-linked benefits programs
Mercer Marsh Benefits stands out by tying employee retention strategies to large-scale benefits design and measurable workforce outcomes. Core capabilities include retirement and health benefits consulting, HR and total rewards analytics, and governance support for complex global programs.
The service also connects retention to risk management, compliance-ready program structures, and data-led plan optimization. Delivery is geared toward organizations that need coordinated benefits and retention operations across multiple workforces.
- +Integrates retention strategy with benefits design and total rewards strategy execution.
- +Provides workforce analytics to support retention-focused plan decisions and targeting.
- +Supports global program governance for consistent retention and benefits operations.
- –Implementation workflows can feel heavy for smaller teams with simple retention needs.
- –Focus is benefits-led, so non-benefits retention drivers may require additional partners.
Best for: Enterprises needing benefits-driven retention strategy and governance across complex workforces
Zalaris
enterprise_vendorDelivers HR transformation and managed HR services that reduce turnover through improved HR processes and employee lifecycle support.
Managed HR operations with case management and benefits support to keep employee services consistent
Zalaris stands out by focusing on the HR and payroll delivery layer that supports consistent employee experiences at scale. It provides employee retention services through HR administration, benefits support, and HR case management processes.
The delivery model emphasizes standardized operations and data-driven HR workflows that reduce disruption during workforce changes. Engagement typically centers on keeping HR services reliable so employees experience fewer policy delays and support gaps.
- +Operational HR delivery helps reduce employee friction from slow support responses
- +HR case management supports continuity during transitions like hires and role changes
- +Benefits administration processes support stability across employee life-cycle events
- +Standardized workflows reduce variability in how retention-related HR requests are handled
- –Retention outcomes depend on strong internal HR governance and input quality
- –Customization for unique retention programs can require more coordination than expected
- –Global consistency across locations may feel slower for highly local HR needs
- –Engagement depth for culture programs is limited compared with specialist consultancies
Best for: Enterprises needing managed HR operations to support retention outcomes
ADP Consulting
enterprise_vendorProvides HR and talent consulting services that improve employee retention by strengthening HR operations and talent programs.
Workforce analytics that connects engagement signals to retention risk analysis
ADP Consulting stands out because it pairs HR consulting with ADP’s HR and payroll systems expertise for retention-focused execution. Core capabilities include workforce analytics, employee lifecycle process improvement, and HR program design tied to measurable outcomes.
The consulting approach emphasizes manager practices, engagement initiatives, and retention risk identification using HR data. This makes ADP Consulting best suited for organizations that want retention strategies integrated with existing HR infrastructure.
- +Integrates retention programs with established HR and payroll operations
- +Uses workforce and HR data to target retention risks
- +Strengthens manager practices to improve engagement and reduce attrition
- +Improves employee lifecycle processes tied to retention outcomes
- –Heavily aligned to ADP ecosystems, limiting fit for non-ADP stacks
- –Retention recommendations may require internal change management capacity
- –Discovery depth can vary by engagement scope and internal stakeholders
- –Less effective for purely tactical retention needs without process redesign
Best for: Enterprises seeking retention strategy integrated with ADP HR systems
How to Choose the Right Employee Retention Services
This buyer’s guide explains how to select employee retention services providers by matching retention goals to the strongest delivery strengths across Mercer, Aon, Deloitte, PwC, Korn Ferry, Gallup, BCG, Mercer Marsh Benefits, Zalaris, and ADP Consulting. The guide also maps common evaluation pitfalls to concrete cons seen in these providers so selection decisions stay grounded in real implementation tradeoffs. Each section points to specific capabilities such as workforce analytics, rewards alignment, HR operating model design, and managed HR case support.
What Is Employee Retention Services?
Employee retention services use workforce, engagement, and people process inputs to reduce avoidable turnover drivers and improve workforce stability. Most engagements connect retention risk to specific causes like compensation misalignment, performance issues, leader capability gaps, or HR operating model friction, then translate insights into targeted interventions. Mercer and Aon illustrate how retention services often combine turnover and attrition analytics with rewards and workforce planning decisions. Gallup illustrates a more measurement-first pattern where engagement assessment drives structured action planning for retention drivers.
Key Capabilities to Look For
Retention results depend on selecting providers that can diagnose specific turnover drivers and then operationalize changes through HR processes, leadership behaviors, or benefits and rewards.
Turnover and retention analytics tied to workforce planning and rewards
Mercer excels at tying turnover and retention analytics to compensation, performance, and workforce planning decisions so retention strategy connects to concrete workforce tradeoffs. Aon also uses workforce analytics and benchmarking to target attrition causes tied to pay inequity and role misalignment.
Workforce talent risk diagnostics with measurable retention roadmaps
PwC delivers workforce talent risk diagnostics paired with measurable retention program roadmaps that connect business objectives to HR transformation delivery. Deloitte integrates attrition analytics with workforce planning and HR operating model design so retention programs align to how HR runs and measures outcomes.
HR transformation and operating model design for retention adoption
Deloitte stands out for linking retention programs to enterprise HR operating model design with governance and stakeholder operating rhythms. PwC brings similar change management strength by redesigning HR processes and leadership practices for retention outcomes beyond a one-time intervention.
Leadership development and succession planning integrated with talent strategy
Korn Ferry focuses retention on preventable turnover drivers by pairing leadership and succession planning with organization design and internal mobility. This approach connects retention to role continuity and leader capability, which supports sustainment of retention initiatives in leadership pipelines.
Research-backed employee engagement measurement mapped to outcomes
Gallup provides Q12-style engagement measurement and analytics that connect employee perceptions to business outcomes through structured action guidance for managers and leaders. This capability supports retention programs that start with measurement quality and manager behavior change.
Benefits and total rewards strategy governance tied to retention outcomes
Mercer Marsh Benefits integrates retention strategy with benefits design and total rewards execution by using HR and total rewards analytics to optimize retention-linked plan decisions. Zalaris supports retention-linked employee experience stability through standardized HR workflows, benefits administration processes, and HR case management that reduces employee friction from slow support.
How to Choose the Right Employee Retention Services
The selection process should match each retention driver to a provider capability, then stress-test data readiness, internal adoption capacity, and delivery depth for the organization’s size and geography.
Start with the retention driver that must be addressed
If the primary goal is fixing pay, role, or performance mismatches, choose Mercer or Aon since both link retention risk to compensation, performance, benchmarking, and workforce analytics. If the primary goal is redesigning HR’s ability to sustain retention improvements, choose Deloitte or PwC since both integrate retention analytics with HR operating model design and leadership change management.
Match provider delivery style to internal capacity and decision cadence
Organizations that can support intensive diagnostic-to-action cycles should consider Mercer and Deloitte because both run structured diagnostics and implementation guidance tied to executive reporting. Organizations that need tightly managed HR service consistency should consider Zalaris because managed HR operations and case management support continuity during hires and role changes.
Validate measurement quality and data prerequisites before committing to analytics
Gallup’s engagement-driven approach depends on survey participation and data quality, so adoption should be supported with manager communication plans that drive participation. Mercer, Aon, Deloitte, PwC, and ADP Consulting also require strong HR and workforce data quality because retention outcomes rely on HR master records and workforce analytics.
Ensure the provider can operationalize retention outcomes, not only diagnose them
PwC and Deloitte emphasize measurable retention roadmaps and HR process change, which helps when retention improvement must persist through leadership operating rhythms. Korn Ferry operationalizes retention through leadership development, succession planning, and organization design so retention initiatives can stick in leadership and mobility systems.
Use a targeted provider when benefits or managed HR operations are the bottleneck
When retention issues center on total rewards design, plan governance, and global benefits consistency, Mercer Marsh Benefits is a fit because it ties retention strategy to benefits design and workforce analytics. When retention issues show up as employee friction from slow HR support or inconsistent case handling, Zalaris is a fit because it standardizes HR workflows, case management, and benefits administration processes.
Who Needs Employee Retention Services?
Employee retention services fit organizations where avoidable turnover can be traced to specific workforce, leadership, rewards, benefits, or HR process drivers.
Enterprises needing analytics-driven retention strategy and rewards-aligned execution across leadership and business decisions
Mercer fits organizations that need turnover and retention analytics tied to compensation, performance, and workforce planning decisions with executive decision support. Aon fits multinational enterprises that need talent and rewards benchmarking plus workforce analytics to target attrition causes across regions and job families.
Large enterprises needing retention programs plus HR transformation and adoption through operating model design
Deloitte fits organizations that need attrition analytics integrated with workforce planning and HR operating model design for adoption across HR and business units. PwC fits organizations that need workforce talent risk diagnostics paired with measurable retention program roadmaps and change management for leadership behaviors and HR process redesign.
Enterprises focusing retention on leadership capability, succession planning, and internal mobility
Korn Ferry fits organizations that need retention programs delivered through leadership development and succession planning integrated with organization design. This model supports reduction of preventable turnover drivers tied to role continuity and leadership pipeline effectiveness.
Organizations prioritizing engagement measurement and manager action planning to improve retention drivers
Gallup fits organizations that want scientifically developed engagement measurement like Q12 mapped to business outcomes and manager-focused improvement guidance. BCG fits enterprise HR leaders who need employee experience diagnostics and workforce analytics integrated into organization and talent transformation programs.
Common Mistakes to Avoid
Retention initiatives often fail when selected providers cannot match the delivery depth to the organization’s HR data readiness, internal stakeholder bandwidth, or operational model constraints.
Choosing a measurement-only engagement approach without a plan to operationalize HR and manager behaviors
Gallup can deliver research-driven engagement insights, but retention improvement still depends on manager action guidance and high survey participation, so measurement must be paired with action execution plans. BCG can integrate employee experience analytics into transformation programs, but retention interventions require sustained leadership sponsorship to stick.
Underestimating internal data readiness and HR master record quality for analytics-led retention work
Mercer, Aon, Deloitte, PwC, and ADP Consulting require high-quality HR and workforce data for retention analytics to be actionable. When HR data quality is weak, Zalaris can still help with operational stability through case management and benefits support, but it cannot replace analytics-driven driver diagnosis for deeper systemic issues.
Expecting lightweight retention pilots to replace enterprise operating model change
Deloitte and PwC deliver retention improvements through HR operating rhythms, data governance, and change management, so they require stakeholder alignment and client process readiness. Korn Ferry is also engagement-based and can feel heavy for small or narrow retention problems, so provider scope must match the organization’s transformation ambition.
Selecting a benefits-focused provider when non-benefits drivers like leadership performance and HR process friction dominate
Mercer Marsh Benefits focuses on benefits design, wellbeing, and total rewards execution, so benefits-led retention strategy works best when rewards and plan governance are core attrition causes. Zalaris can reduce employee friction through managed HR operations and standardized case handling, but culture depth is limited compared with specialist consultancies, so culture-heavy retention issues may need additional expertise beyond operational delivery.
How We Selected and Ranked These Providers
we evaluated every service provider on three sub-dimensions. The first sub-dimension is capabilities with weight 0.4. The second sub-dimension is ease of use with weight 0.3. The third sub-dimension is value with weight 0.3 and the overall rating is computed as overall = 0.40 × features + 0.30 × ease of use + 0.30 × value. Mercer separated from lower-ranked providers because it combines evidence-led turnover and retention analytics tied to compensation, performance, and workforce planning decisions with structured diagnostic-to-action delivery that directly supports executive decision-making.
Frequently Asked Questions About Employee Retention Services
Which provider is best for building a retention strategy from workforce analytics and labor-market data?
Which firm works best for global retention programs across multiple regions and benefits environments?
How do Deloitte and PwC differ when retention work also requires HR transformation and operating model redesign?
Which provider is best when retention goals depend on leadership development, succession planning, and internal mobility?
Who is best suited for engagement-driven retention improvements using scientifically grounded surveys?
Which provider supports retention through organization and employee experience transformation at scale?
Which service model focuses on managing HR operations and case workflows to reduce employee friction that drives attrition?
What provider is the best match when retention initiatives must be embedded into existing HR infrastructure and lifecycle processes?
Common retention programs fail when leadership adoption and internal operating rhythms are missing. Which providers address that directly?
When retention initiatives require executive decision support that connects pay, performance, and workforce planning, which providers align most closely?
Conclusion
After evaluating 10 employment workforce, Mercer stands out as our overall top pick — it scored highest across our combined criteria of features, ease of use, and value, which is why it sits at #1 in the rankings above.
Use the comparison table and detailed reviews above to validate the fit against your own requirements before committing to a tool.
Tools reviewed
Primary sources checked during evaluation.
Referenced in the comparison table and product reviews above.
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