| HR Information System | Workday, SAP SuccessFactors, BambooHR, etc. | Personal details, employment history, contract, salary, benefits, absence records, performance ratings |
| Email system | Microsoft 365, Google Workspace | Emails sent by the employee, received by the employee, and about the employee |
| CCTV system | On-premise recording system | Video footage where the employee is identifiable |
| Access control system | Badge/proximity card system | Entry/exit logs, access attempts to restricted areas |
| Time and attendance | Timekeeping system, biometric readers | Clock-in/out records, attendance patterns |
| Payroll system | SAP, ADP, Sage | Salary history, tax records, pension contributions, benefits |
| Performance management | Workday, Lattice, Culture Amp, etc. | Performance reviews, objectives, competency assessments, calibration data, 360 feedback |
| Learning management system | Cornerstone, SAP LMS, etc. | Training records, certifications, mandatory training completion |
| Recruitment system | Greenhouse, Lever, Workable | Application data, interview notes, assessment scores (for recent hires) |
| Disciplinary and grievance files | HR case management, paper files | Investigation notes, witness statements, outcome letters |
| Occupational health records | OH provider system | Fitness-for-work reports, referral correspondence |
| Monitoring systems | DLP, web proxy, MDM | Email monitoring alerts, internet usage logs, device management data |
| Expenses system | Concur, Expensify | Expense claims, receipts, approval records |
| Informal records | Line manager email, notes, instant messages | Notes about the employee, performance observations, management discussions |
| Telephone system | Call recording platform | Recorded calls where the employee is a participant |
| IT system logs | Active Directory, service desk | Account activity, password resets, service desk tickets |
| File servers and SharePoint | Shared drives, collaboration platforms | Documents authored by or concerning the employee |