Very urgent : officers in hr department

• Hiring
• Promotions
• Reassignments
• Position classification and grading
• Salary determination
• Performance appraisal review and processing
• Awards review and processing
• Personnel data entry and records maintenance
• Consultation and advisory services to management and employees
  • Conduct problems
  • Performance problems
• Policy development
• Technical policy interpretation
• Work Permitting Immigration Visa Program
• Benefits
  • Health care insurance
  • Life insurance
  • Disability insurance
  • Retirement
  • Voluntary accidental death and dismemberment insurance
  • Leave Transfer Program
  • Tuition Assistance Plan
  • Training opportunities
  • Combined Federal Campaign
• Employee assistance referral
• Workers' compensation

Also refer below link:

https://www.citehr.com/80087-hr-department-functions.html