What Documentation Employers Should Keep (And For How Long)

Running a business means managing more than day-to-day operations. Employers are responsible for maintaining a wide range of records related to employees, payroll, benefits, taxes, and workplace safety. Proper recordkeeping is not only a best practice, but it is also often required by federal and state laws.

Failing to maintain accurate records can create significant challenges during audits, employee disputes, workers’ compensation claims, tax reviews, or government investigations. On the other hand, organized documentation helps businesses stay compliant, respond quickly to requests, and protect themselves from potential liability.

While recordkeeping requirements can vary by state and industry, every employer should understand the key documents they are responsible for maintaining and how long those records should be retained. With that foundation in mind, the first area to review is personnel files.

Why Record Retention Matters

Good recordkeeping serves several important purposes:

  • Demonstrates compliance with labor and employment laws
  • Supports payroll and tax reporting accuracy
  • Helps defend against employee claims and lawsuits
  • Provides documentation during audits and investigations
  • Preserves important business history and operational records

Keeping records for too short a period can expose a business to compliance risks. Keeping unnecessary records indefinitely can create storage challenges and increase the amount of information that must be reviewed during legal proceedings.

A clear record retention strategy helps strike the right balance. With that balance in place, employers can turn to the records tied directly to individual employees, starting with personnel files.

Personnel Files

Personnel files contain the core employment records associated with each employee. These files should include documentation that tracks an employee’s relationship with the company from hire to separation.

Common personnel file documents include:

  • Employment applications
  • Resumes
  • Offer letters
  • Job descriptions
  • Performance reviews
  • Promotion records
  • Disciplinary actions
  • Training certifications
  • Attendance records
  • Separation documentation

As a general guideline, employers should retain personnel records for at least one year after termination, unless state-specific requirements or potential legal claims call for a longer period.

Maintaining complete and organized personnel files helps employers demonstrate consistent employment practices and support decisions regarding hiring, promotion, discipline, and termination. Another major recordkeeping area is payroll records.

Payroll Records

Payroll documentation is among the most heavily regulated categories of business records.

Employers should maintain records that show:

  • Employee names and addresses
  • Occupation and job classification
  • Hours worked
  • Pay rates
  • Overtime calculations
  • Wage deductions
  • Payroll registers
  • Timecards and timesheets
  • Payroll tax filings

Under the Fair Labor Standards Act (FLSA), payroll records generally must be retained for at least three years, unless a longer period is required by other applicable laws.

Supporting records such as timecards, schedules, and wage calculation documents should typically be retained for at least two years.

Accurate payroll documentation is critical for demonstrating compliance with wage-and-hour laws and responding to employee wage disputes. Another essential compliance record is the I-9 form.

I-9 Forms

Every employer must complete Form I-9 to verify employment eligibility for employees hired in the United States.

Unlike other personnel records, I-9 forms should be stored separately from employee personnel files whenever possible. This helps streamline audits and limits exposure of unrelated employee information.

Federal requirements state employers must retain I-9 forms for:

  • Three years after the employee’s hire date, or
  • One year after employment ends

Whichever date is later applies.

Failure to maintain proper I-9 records can result in significant penalties during audits conducted by federal agencies. Employers should also keep records related to employee benefits.

Employee Benefits Records

Employers offering health insurance, retirement plans, or other benefits should maintain documentation related to plan administration and employee participation.

Examples include:

  • Enrollment forms
  • Beneficiary designations
  • COBRA notices
  • Benefits election forms
  • Retirement plan records
  • Plan documents
  • Employee communications regarding benefits

Many benefits-related records should be retained for at least 6 years, particularly those associated with ERISA-governed retirement plans, unless other applicable requirements call for a longer period.

Maintaining thorough benefits documentation helps employers demonstrate compliance and respond effectively to employee questions or claims. Tax records are another key category employers must maintain.

Tax Records

Federal and state tax agencies require employers to maintain records supporting tax filings and payments. Employers should also keep records related to income tax withholding, employment tax deposits, and any supporting documentation used to prepare and verify tax filings.

Important tax records include:

  • Federal and state tax returns
  • W-2 forms
  • W-4 forms
  • Payroll tax deposits
  • Quarterly tax filings
  • Unemployment tax records

The Internal Revenue Service generally recommends retaining employment tax records for at least four years after the date taxes become due or are paid, whichever is later, unless other tax requirements apply. Employers should also retain supporting tax documentation for the same period unless a longer retention period applies under other requirements.

Employers should also maintain supporting documentation used to prepare tax filings in case questions arise during an audit. Workers’ compensation records require similar attention.

Workers’ Compensation Records

Workers’ compensation documentation should be carefully maintained to support claims management and compliance efforts.

Records may include:

  • Injury reports
  • First reports of injury
  • Medical documentation
  • Return-to-work plans
  • Claims correspondence
  • Safety investigation reports

Retention requirements vary by state and carrier, but many employers maintain workers’ compensation records for at least five years after claim closure, unless a longer period is required. Workplace safety records are another important part of recordkeeping.

Businesses operating in higher-risk industries such as construction, manufacturing, landscaping, and transportation should pay particular attention to workers’ compensation documentation.

Safety and OSHA Records

Employers subject to Occupational Safety and Health Administration (OSHA) recordkeeping requirements must retain workplace safety records for specific periods.

Examples include:

  • OSHA 300 Logs
  • OSHA 300A Summaries
  • OSHA 301 Incident Reports
  • Safety training records
  • Hazard assessments

OSHA injury and illness records generally must be retained for five years following the end of the calendar year they cover, unless a different period applies under specific recordkeeping rules.

Maintaining accurate safety records helps employers identify trends, improve workplace safety programs, and demonstrate compliance during inspections. Some records also require extra care because they contain medical or confidential employee information.

Medical and Confidential Employee Records

Certain employee records should never be stored in standard personnel files.

Medical information should be maintained separately, and access should be limited to authorized individuals.

Examples include:

  • Medical certifications
  • FMLA documentation
  • Disability accommodation records
  • Drug testing results
  • Health screening information

These records may be subject to additional privacy and confidentiality requirements under federal and state laws.

Employers should establish secure storage procedures to protect sensitive employee information. Electronic recordkeeping is one more way to support these efforts.

Electronic Recordkeeping Best Practices

Many employers now maintain records electronically. Digital recordkeeping can improve efficiency, accessibility, and security when implemented properly.

Best practices include:

  • Creating secure backup systems
  • Restricting access to sensitive information
  • Using consistent file naming conventions
  • Establishing document retention schedules
  • Conducting periodic record audits
  • Implementing cybersecurity protections

Electronic records should be maintained with the same level of care and compliance as paper records. From there, employers must also consider how these practices fit into broader workforce management needs.

A Note About Health and Safety Records

While many employment records have retention periods measured in a few years, employers should be aware that certain workplace health and safety records are subject to much longer requirements. Some OSHA-related exposure and medical records, for example, may need to be retained for 30 years after an employee’s termination. Because these requirements vary depending on the type of record, employers should review applicable federal and state regulations or consult with an HR or compliance professional to ensure they meet all recordkeeping obligations.

How Worksite Can Help

Record retention is more than simply keeping paperwork organized. Different documents have different retention requirements, and some, such as certain health and safety record, may need to be maintained for decades. Establishing a clear recordkeeping policy and regularly reviewing applicable requirements can help protect your business during audits, investigations, and employment disputes.

Worksite helps employers simplify workforce management through comprehensive HR, payroll, benefits administration, workers’ compensation, and compliance support. Our team helps businesses establish consistent processes, maintain accurate records, and navigate changing employment regulations with confidence.

By partnering with Worksite, employers gain access to experienced professionals who can help streamline administrative responsibilities, reduce compliance risks, and create more efficient systems for managing employee information throughout the employment lifecycle. Proper recordkeeping remains the foundation for these efforts.

In Conclusion

Proper recordkeeping is one of the most important yet often overlooked responsibilities employers face. Maintaining accurate documentation helps protect businesses, support compliance efforts, and ensure important information is readily available when needed.

While retention requirements vary by record type and applicable laws, establishing a formal record retention policy can help employers stay organized and reduce risk, while accounting for exceptions where longer retention is required.

When in doubt, consult with HR, payroll, legal, or compliance professionals to ensure your recordkeeping practices align with current requirements and industry best practices.