Unprofessional Conduct: What It Means for Illinois Employers and How to Document It

What Is Unprofessional Conduct?

Unprofessional conduct in the employment context means behavior that falls below the standards expected in a professional workplace — conduct that is disruptive, disrespectful, dishonest, or harmful to the organization, its employees, or its clients. Unlike misconduct (which typically involves clear violations of policy or law), unprofessional conduct often lives in gray zones: chronic tardiness, inappropriate comments, poor attitude, failure to follow reasonable workplace norms.

For Illinois employers, the term matters for two reasons: (1) it’s often the basis for discipline and termination, and (2) it’s frequently disputed when employees challenge those decisions as discriminatory or retaliatory.

Illinois Employment Law Context

Illinois is an at-will employment state, meaning employers can generally terminate employees for any reason or no reason — as long as the reason isn’t illegal (discrimination, retaliation for protected activity, violation of a contract). “Unprofessional conduct” is a legally permissible reason to terminate, but only if:

• The conduct actually occurred
• You can prove it occurred
• The conduct was not pretextual cover for a discriminatory motive
• Similarly situated employees outside the protected class were treated the same way

The Illinois Human Rights Act prohibits discrimination based on race, color, religion, national origin, sex, age, disability, sexual orientation, and other protected characteristics. If your termination for “unprofessional conduct” looks inconsistent — a white employee kept his job for similar behavior, a Black employee was fired — you have an exposure problem.

Common Examples of Unprofessional Conduct in the Workplace

• Repeated failure to meet deadlines after documented warnings
• Insubordination — refusal to follow reasonable workplace instructions
• Inappropriate, demeaning, or harassing language toward colleagues
• Dishonesty, misrepresentation, or falsification of records
• Excessive absenteeism or tardiness after notice and warning
• Disruptive behavior that interferes with others’ work
• Inappropriate use of company resources (including social media during work hours)
• Failure to maintain confidentiality of company or client information

Why Documentation Is Everything

The single most important thing Illinois employers can do when dealing with unprofessional conduct is document it contemporaneously — in writing, at the time it occurs.

What Good Documentation Looks Like

• Date, time, and location of each incident
• Specific description of the conduct — what was said or done, not a characterization (“employee raised his voice and stated ‘I don’t report to you’ during the team meeting on March 3” is better than “employee was rude”)
• Witnesses present (names, if applicable)
• Impact on the workplace — did it disrupt work, make others uncomfortable, affect a client?
• Prior instances and warnings — pattern evidence is powerful
• Employee’s response — what they said when confronted

This documentation protects you if the employee later claims wrongful termination, discrimination, or retaliation. Without it, your case rests on testimony vs. testimony — a much harder position.

Progressive Discipline: The Right Process

Most Illinois employers use some version of progressive discipline for unprofessional conduct — escalating responses that give employees notice and opportunity to correct before termination. A standard approach:

1. Verbal warning (documented in a contemporaneous note)
2. Written warning (signed by the employee and placed in their file)
3. Performance improvement plan (PIP) or final written warning
4. Termination

Progressive discipline isn’t legally required in Illinois for at-will employees, but it creates a documented record that the employee was on notice, given a fair chance, and treated consistently with company policy — which significantly reduces your litigation risk.

Note: for severe misconduct (physical violence, theft, sexual harassment), you don’t need to follow progressive steps. Immediate termination is appropriate and legally defensible when the incident warrants it.

Employee Handbook: Your First Line of Defense

An employee handbook with a clear definition of unprofessional conduct — and a clear discipline process — is essential for Illinois employers. The handbook should:

• Define what constitutes unprofessional conduct (with examples)
• State the company’s right to terminate for unprofessional conduct
• Describe the discipline process (while reserving the right to bypass steps for serious conduct)
• Include an acknowledgment signed by each employee upon hire

A signed acknowledgment prevents the “I didn’t know that was against the rules” defense. Fitter Law drafts employment handbooks for Illinois startups and small businesses as part of our employment law services. See our subscription plans.

Frequently Asked Questions

Can I fire an Illinois employee for unprofessional conduct without prior warnings?

Yes, if the conduct is sufficiently serious. Illinois at-will employment allows termination without following progressive discipline unless your employment agreement or handbook commits you to a specific process. For less severe conduct, prior warnings reduce litigation risk and demonstrate consistent enforcement.

What if the unprofessional conduct involves social media posts outside of work?

Illinois has a strong social media law that restricts employer access to personal accounts. However, if an employee’s public posts harm the company’s reputation, harass coworkers, or violate confidentiality obligations, discipline may be appropriate. Consult an employment attorney before acting on off-work social media activity.

How do I handle unprofessional conduct that may also be a harassment complaint?

If unprofessional conduct involves potential harassment — sexual, racial, or otherwise — treat it as a harassment investigation, not just a discipline matter. Document separately, investigate promptly and impartially, and consult an employment attorney. Illinois employers have legal obligations to investigate harassment complaints and take corrective action.