Moonlighting While on Sick Leave: What You Need to Know
Understanding Moonlighting During Sick Leave
UK law allows employees to take time off to recover from illness or injury. However, a growing number of workers consider taking on secondary jobs while signed off sick from their main employment — a practice known as moonlighting. This issue can create serious legal, ethical, and contractual concerns for both employees and employers.
Corporate Investigations helps businesses uncover the truth when they suspect an employee of moonlighting. Here’s everything you need to know about the legal implications and risks of working while on sick leave.
What Is Moonlighting?
Moonlighting refers to an employee working a second job in addition to their main employment. When this occurs during a period of certified sick leave, it raises a red flag. The core expectation is that the individual is too unwell to perform any work duties, so any active employment elsewhere could call into question the validity of their absence.
Is It Legal to Work While on Sick Leave?
In some cases, yes — but only under very specific circumstances.
For example, if an employee is off work due to stress, anxiety, or a toxic workplace environment, but they take up a role in a different, less stressful setting, this may not be unlawful. However, failure to disclose this to the primary employer, or deliberately misrepresenting one’s condition can lead to serious consequences, including disciplinary action or even dismissal.
Consequences of Moonlighting While on Sick Leave
When an employer discovers that an employee is working while on sick leave, especially without providing notification, they may impose serious repercussions:
- Disciplinary Proceedings: The employee may face internal investigations and formal disciplinary measures for breach of contract or misconduct.
- Summary Dismissal: If it’s proven that the individual is fit to work but falsely claimed to be unwell, this may justify immediate dismissal for gross misconduct.
- Loss of Statutory Sick Pay (SSP): If the employer finds that the employee is capable of working, they can revoke eligibility for SSP.
- Legal Action: In extreme cases, particularly where fraudulent sick pay claims are made, legal proceedings for fraud or breach of contract may follow.
Common Misconceptions
“If I’m off with stress, I can still work a less stressful job.”
This is partially true, but it must align with medical advice and not undermine the trust of the main employer. Employees must carefully consider any work they undertake during sick leave and disclose it to their employer when necessary.
“They can’t sack me while I’m on sick leave.”
False. If there is evidence of misconduct, employers are within their rights to dismiss an employee, even while they are signed off.
What Employers Can Do
If you suspect that an employee is moonlighting while off sick, you have the right to investigate the matter discreetly and lawfully. At Corporate Investigations, we offer specialist services to help you gather evidence, assess the risk to your business, and handle potential misconduct with confidence.
Contact Corporate Investigations
Think an employee may be working whilst on sick leave? Don’t leave it to chance — get the truth.
📞 Book your FREE 30-Minute Consultation today.
Call our team on 0800 334 5440 to speak with a dedicated corporate investigator.
