
Horizon HR — Workforce, Payroll & Compliance Modernization
Automating payroll accuracy, strengthening compliance, and accelerating distributed workforce operations with secure, cloud-native engineering.
Overview
Horizon HR supports payroll, compliance, and HR operations for more than 40,000 employees across multiple U.S. states. Growth in distributed teams and rapidly changing state-by-state regulations created payroll inconsistencies, compliance exposure, and operational slowdowns.
Codexium partnered with Horizon HR to modernize their HR and payroll systems through automation, API-driven workflows, and improved data governance—enabling real-time operations and dramatically reducing manual intervention.
Client Details
- Industry: Human Resources & Payroll Management
- Employees Managed: 40,000+
- Regions: Nationwide (U.S.)
- Core Functions: Payroll, Benefits, Compliance
Challenges
Inconsistent Payroll Accuracy
Fragmented data sources and regional regulatory differences caused discrepancies in multi-state payroll calculations.
High Compliance Exposure
Manual compliance audits slowed response times and increased risk of missed filings during regulatory updates.
Delayed Onboarding
Legacy provisioning workflows created onboarding delays for new employees and contractors.
Lack of Real-Time Visibility
Executives lacked real-time dashboards for compliance, payroll readiness, and workforce trends.

Codexium’s Solution & Measured Impact
Payroll Automation, Multi-State Compliance & HR Modernization
Codexium implemented a unified, modernized HR and payroll platform built on secure cloud infrastructure, automated compliance, and real-time data pipelines. The solution eliminated manual steps, reduced errors, and enabled leadership to access accurate, up-to-the-minute workforce insights.
Unified Payroll Engine
Real-time validation and consolidated rules improved accuracy across all states.
Automated Compliance
Policy updates, filings, and alerts now trigger automatically through event-driven logic.
API-Driven Integrations
Seamless connectivity across HRIS, payroll vendors, and benefits systems.
IAM & Access Automation
Role-based onboarding workflows reduced provisioning time significantly.
25%
Faster Payroll Processing
38%
Reduction in Compliance Effort


Results
- Consistent multi-state payroll accuracy through automated rules and validation.
- Faster onboarding via identity automation and integrated workflows.
- Enhanced compliance posture with centralized reporting and automated alerts.
- Real-time visibility across workforce and payroll readiness for executives and HR operations.

Future Roadmap
With a unified, modernized HR platform, Horizon HR is positioned to expand into additional states, integrate with emerging HRIS platforms, automate benefits administration, and adopt workforce analytics for predictive planning.
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