One Workforce Partner. Four Powerful Solutions.
Today's school districts and public service agencies are navigating historic workforce pressures — staff shortages, compliance complexity, rising costs, and increasing service demands.
ESI delivers flexible, customized workforce solutions designed to meet you where you are. Whether you need substitute coverage, specialized professionals, district-wide staffing oversight, or a way to retain retiring talent — ESI provides a smarter path forward.
Encore (formerly RetireRehire) enables eligible retirees to return to work as ESI employees while collecting their pension. This helps organizations retain experienced professionals and preserve institutional knowledge.
Best for: Education and public service agencies seeking access to experienced professionals.
- Retention of high-performing retirees
- Compliance support and guidance
- Budget efficiencies in many cases
SubSource is ESI's substitute staffing solution, designed to increase fill rates and reduce the operational strain of managing substitute pools. ESI actively recruits and hires certified and classified substitutes.
Best for: Districts looking to stabilize substitute coverage and reduce the daily administrative burden on HR and school leaders.
- Expanded substitute talent pools
- Increased fill rates
- Dedicated support for substitutes
InDemand is ESI's full-time contracted staffing solution. When specialized, related services, or other high-impact roles are difficult to fill, ESI delivers pre-vetted, high-quality professionals -- employed and supported by ESI directly.
Best for: Education and public service agencies needing reliable, high-quality professionals in specialized areas.
- Custom hiring strategies
- Accelerated recruitment timelines
- Pre-screened, quality candidates
Connect is ESI's Managed Service Provider (MSP) solution, designed to give districts centralized oversight of all contingent staffing. Instead of managing multiple staffing vendors, contracts, and systems, you gain one accountable partner overseeing your entire staffing ecosystem.
Best for: Districts seeking system-wide staffing oversight and cost transparency.
- Centralized vendor oversight
- Standardized rates and consolidated billing
- Real-time dashboards and workforce analytics
More than a Staffing Provider
A Smarter Way to Support Schools & Public Service
ESI is more than a staffing provider — we are a workforce partner dedicated to helping schools and public service agencies operate with confidence, continuity, and care.
Because when staffing is stable, students and communities thrive.
Stronger Together — Or Powerful on Their Own
Each ESI program is designed to deliver measurable value independently. But when combined, they create a comprehensive workforce strategy.
- Connect provides strategic oversight and vendor accountability.
- InDemand fills specialized and hard-to-staff roles.
- SubSource stabilizes daily substitute coverage.
- Encore retains and rewards experienced talent.
Together, they offer:
- Greater workforce stability
- Stronger compliance and risk mitigation
- Higher fill rates across all staffing categories
- Reduced administrative burden
- Improved budget visibility and control
ESI Workforce Solutions Comparison Chart
 |  |  |  | |
|---|---|---|---|---|
| Encore | SubSource | InDemand | Connect | |
| Primary Purpose | Retain & rehire retirees to fill critical gaps | Substitute teacher & support staffing | Direct staffing for hard-to-fill & specialized roles | District-wide vendor management & workforce oversight |
| Best For | Maintaining continuity with experienced professionals | Daily classroom coverage & substitute stability | Specialized, therapy, or professional shortages | System-wide control, compliance & cost visibility |
| Employment Model | ESI is employer of record | ESI is employer of record | ESI is employer of record | Manages multiple vendors |
| Administrative Relief | Retiree employment logistics, hiring & onboarding, payroll, HR compliance & management | Recruiting, hiring & onboarding, payroll, HR compliance & management | Recruiting, hiring & onboarding, payroll, HR compliance & management | Vendor oversight, billing consolidation, compliance tracking |
| Strategic Impact | Retention of most experienced workers | Higher substitute fill rates | Improved quality & speed of placements | Full workforce visibility & accountability |
ESI provides the following services for our programs:
- Pre-employment Screening
- New Hire Orientations
- Online Onboarding
- Employee Relations
- Program Analytics
- Crisis Management
- Compensation Consulting
- Employee Engagement and Retention
- Targeted Recruiting Campaigns
- Professional Development Opportunities
- Payroll
- Personal Customer Service
Want to learn more?