Employee Sick Leave Investigations: When Companies Suspect Sick Leave Is Being Abused

Website Author

Sep 7

7 min read

Employee sick leave is an important workplace entitlement. When someone is genuinely unwell, they should be able to take time away from work to recover without fear of being unfairly questioned or targeted.

However, employers can sometimes encounter situations where there are reasonable grounds to believe that sick leave is being misused.

An employee may call in sick but subsequently be seen undertaking activities that appear inconsistent with their stated illness. In other situations, an employee may repeatedly take sick leave around weekends, public holidays or particular work commitments. There may also be concerns that an employee is working elsewhere while receiving sick leave from their primary employer.

When concerns reach this level, a professional private investigator can assist an employer by conducting a discreet, factual and appropriately documented workplace investigation.

What Is a Sick Leave Investigation?

A sick leave investigation involves gathering information to establish whether there are reasonable grounds to support or question an employee's use of sick leave. The purpose should not be to automatically prove that an employee is dishonest. Instead, the investigation should establish the facts.

For example, an employer may be concerned because an employee has called in sick but has allegedly been observed:

Working for another business
Performing physically demanding activities
Attending another workplace
Participating in recreational activities that appear inconsistent with their stated condition
Travelling when they were expected to be recovering at home
Carrying out business activities while claiming to be medically unable to work
Repeatedly taking sick leave in circumstances that appear unusual
Engaging in activities that conflict with information previously provided to the employer

It is important to remember that being seen outside the home does not, by itself, establish that an employee is not sick.

Someone recovering from an illness may legitimately leave their home, attend medical appointments, collect medication, exercise as part of their recovery or undertake other activities that do not prevent them from being medically unfit for work.

This is why a professional investigation needs to focus on facts rather than assumptions.

Why Employers Use Private Investigators

Employers often have limited resources to conduct surveillance or investigations themselves. Managers may also know the employee personally, creating a risk of confrontation, accusations or misunderstandings.

A professional investigator provides an independent approach. Rather than approaching an employee and asking them to explain their whereabouts, an investigator can conduct discreet enquiries and, where appropriate and lawful, surveillance from public locations.

The resulting information can then be presented to the employer in an objective format.

This can help management make an informed decision about whether further action is appropriate.

Common Warning Signs of Sick Leave Abuse

There is no single indicator that proves an employee is abusing sick leave. However, employers may become concerned when several factors occur together.

1. Unusual Sick Leave Patterns

Repeated sick leave immediately before or after weekends, public holidays or particular rostered shifts can raise questions.

A pattern does not necessarily mean misconduct, but it may justify further consideration by the employer.

2. Information That Doesn't Appear to Match

An employee may report being unable to perform their normal duties because of an illness or injury, while information subsequently emerges suggesting they may be undertaking substantially different activities.

For example, an employee may be unable to perform the physical requirements of their normal job but allegedly be undertaking physically demanding work elsewhere.

Again, context is important. Different activities can place very different demands on an individual's health.

3. Working for Another Employer

One of the more significant concerns can arise where an employee appears to be performing paid work elsewhere while receiving sick leave from their primary employer.

Depending on the circumstances, this may raise questions about the employee's compliance with workplace policies, contractual obligations and the basis on which sick leave was taken.

4. Social Media Activity

Employees sometimes publicly post photographs, videos or updates while they are on sick leave. Social media information can potentially form part of an investigation, particularly where it is publicly available. However, social media content should be interpreted carefully. A photograph or post may not provide sufficient context to determine whether an employee was genuinely unfit for work.

What Can a Private Investigator Do?

A professional investigator can assist by gathering objective evidence within the boundaries of applicable law. Depending on the circumstances, this may include:

Background enquiries

Research can help establish relevant information about businesses, publicly available activities or other matters connected to the investigation.

Open-source intelligence

Publicly available information may provide useful leads or corroborating evidence.

Surveillance

Where appropriate, surveillance from lawful locations can document an individual's activities during a period of claimed sick leave.

Photographic and video evidence

Investigators may document relevant activities where legally permissible.

Chronological reporting

Rather than simply supplying photographs, a professional investigator can create a chronological record showing dates, times, locations and observed activities.

This can make the information significantly easier for an employer or employment adviser to assess.

The Importance of Evidence

One of the biggest mistakes an employer can make is acting on suspicion alone.

An employee saying they are sick does not mean an employer should assume they are dishonest simply because they are later seen undertaking an activity.

For example, an employee suffering from a back injury may still be capable of walking, shopping or driving while being unable to safely perform their normal occupation.

Similarly, someone experiencing mental health difficulties may be advised by a medical professional to exercise or maintain social contact as part of their recovery.

The investigation should therefore establish what happened, not attempt to make a medical diagnosis. An investigator should record observations objectively rather than stating conclusions such as:

"The employee was clearly not sick."

A more appropriate approach is to document:

"At 2:15 pm, the subject was observed lifting and carrying several boxes from a vehicle into a commercial premises."

The employer can then consider that evidence alongside medical information, workplace policies and the employee's explanation.

Maintaining Confidentiality

Sick leave investigations can involve highly sensitive employment matters.

Confidentiality is therefore critical. Information should generally be provided only to people who have a legitimate reason to receive it. Investigators should also take care to avoid unnecessarily disclosing an employee's personal information to colleagues, customers, neighbours or members of the public. A professional investigation should be conducted discreetly and with consideration for the dignity and privacy of everyone involved.

Avoiding Confrontation

Employers should generally avoid confronting an employee during an investigation.

If an investigator observes an employee undertaking an activity that appears inconsistent with their claimed incapacity, the appropriate approach is usually to document the observation rather than intervene.

Confrontation can:

Escalate the situation
Alert the employee to the investigation
Affect subsequent evidence gathering
Create unnecessary conflict
Potentially compromise an otherwise discreet investigation

The investigator's role is to gather evidence, not to interrogate or intimidate the employee.

What Happens After an Investigation?

A professional investigator should provide the employer with a clear report setting out the relevant findings.

This may include:

Date and time of observations
Location
Description of activities observed
Photographs or video where appropriate
Relevant background information
A chronological timeline
Supporting documentation
Investigator observations, clearly distinguished from assumptions or conclusions

The investigator should generally avoid making employment decisions on behalf of the employer. Instead, the evidence can be provided to management, HR or an employment professional for consideration.

Sick Leave Investigations and Employment Decisions

Evidence obtained during an investigation should not automatically result in disciplinary action. Employers should consider the entire situation, including:

The employee's explanation
Medical information where legitimately available
The employee's normal duties
The nature of the illness or injury
Workplace policies
Employment agreements
Previous relevant conduct
The circumstances surrounding the sick leave
Whether the evidence actually demonstrates misconduct

Employers should also ensure that any employment process follows applicable New Zealand employment law and principles of procedural fairness.

Where significant disciplinary action is being considered, obtaining independent employment-law advice can be appropriate.

Why Professional Documentation Matters

If an investigation eventually becomes part of an employment dispute, the quality of the original evidence can become extremely important. A report based on assumptions, speculation or poorly documented observations may be of limited value.

A properly prepared investigation provides a clear distinction between:

What was reported

What was investigated

What was observed

What evidence was obtained

What remains unknown

This approach allows the employer to make decisions based on evidence rather than emotion or suspicion.

When Should a Company Consider an Investigation?

There is no requirement to investigate every instance of sick leave.

An investigation may be appropriate where there are specific and reasonable grounds for concern, particularly where the potential misconduct could have a significant impact on the business.

Examples may include:

Credible reports that an employee is working elsewhere
Repeated unexplained sick-leave patterns
Information suggesting an employee has provided misleading information
Publicly available evidence that appears inconsistent with the employee's stated circumstances
Concerns about fraudulent or dishonest use of sick leave
Previous relevant incidents where further evidence has emerged

The key is proportionality.

The purpose of an investigation should be to establish the facts, not to create a case against an employee simply because management is suspicious.

A Professional, Evidence-Based Approach

Employee sick leave is an important workplace entitlement, and genuine illness should always be treated appropriately. At the same time, businesses have a legitimate interest in addressing suspected dishonesty or misuse of workplace entitlements. A professional private investigator can provide an independent means of establishing what an employee is actually doing during a period of claimed sick leave. The most effective investigations are discreet, proportionate, factual and evidence-based.

Rather than asking, "How can we prove this employee is lying?", the better question is:

"What are the facts, and what evidence is available to help us understand the situation?"

That distinction can make all the difference.

Looking for Professional Sick Leave Investigation Services?

If your business has reasonable concerns about potential sick-leave abuse, a professional private investigator can help establish the facts discreetly and objectively.

An appropriately conducted investigation can provide employers with clear evidence that can then be considered alongside employment policies, medical information and professional employment advice.

The objective is simple: establish the facts, document the evidence and allow the employer to make an informed decision.