Develop a secure and intuitive mobile and web application for streamlined employee time tracking and scheduling. The app should integrate with our existing HR system to pull employee profiles.

**Core Features:**
- Employee time clock with geofencing and GPS tracking
- Manager-employee chat and messaging
- Shift scheduling and management with notifications and reminders
- Time-off request and approval system
- Reports and analytics for labor cost analysis

**Integration Needs:**
- HR system integration for employee data and access control
- Push notification service

**User Roles:**
- Employee
- Manager
- Admin

**Security:**
- Secure authentication and authorization
- Data encryption at rest and in transit

**Performance and Scalability:**
- Real-time updates for time and scheduling changes
- Ability to handle large volumes of employee data and transactions