Medically reviewed by the clinical team at Immediate Care Center of Westmont · Published July 23, 2026 · Last reviewed July 23, 2026
At Immediate Care Center of Westmont, a walk-in urgent care serving Westmont and the surrounding DuPage County communities of Downers Grove, Hinsdale, Oak Brook, Darien, Clarendon Hills, Willowbrook, La Grange, and Villa Park, we complete pre-employment physicals for local employers and job seekers regularly. One of the most common questions we hear is: “What could actually disqualify me?” The reassuring answer is that far fewer things than most people fear. A pre-employment physical is designed to confirm you can safely perform a specific job — not to find reasons to reject you. This guide explains what genuinely affects the outcome and what usually does not.
A pre-employment physical is judged against one central question: can you safely perform the essential functions of this particular job? The exact same finding can be a non-issue for one role and a real concern for another. A minor knee limitation may not matter for a desk job but could matter for a role that requires repeated heavy lifting. Because the standard is tied to job duties, there is no universal list of “disqualifying” conditions. What matters is the match between your health and the safety-critical demands of the position.
This job-focused approach also reflects legal protections. Under disability and employment law, employers generally must consider reasonable accommodations rather than automatically rejecting a candidate over a health condition. The clinician’s job is to describe your functional ability objectively; the employer then decides how that fits the role.
Please note: Immediate Care Center of Westmont provides non-DOT occupational exams and drug testing only. We do not perform DOT, CDL, or FMCSA physicals or DOT-regulated drug testing, and nothing in this article should be read as describing DOT medical standards.
A handful of findings are the most common reasons an employer may pause, decline, or ask for more information before clearing a candidate.
When an employer includes a workplace drug screen, a confirmed positive result is one of the most frequent reasons an offer is affected. This is why disclosing your prescription medications at the time of testing is so important — a valid prescription can explain certain results and be documented appropriately. Our non-DOT drug testing service handles common workplace panels. The federal government’s overview of workplace testing programs is available from SAMHSA’s Drug-Free Workplace Programs, and disclosing your prescriptions up front helps a legitimate medication be documented rather than misread. It is also worth remembering that policies differ from employer to employer; some workplaces distinguish between substances based on state law and their own written policy, so the same result may be handled differently in different settings.
If a health issue would genuinely stop you from doing the core, safety-critical parts of a job — even with reasonable accommodation — it may affect clearance. Examples are job-specific: uncontrolled seizures for a role operating dangerous machinery, or a significant untreated vision deficit for a driving-heavy position. The key words are “uncontrolled” and “unmanaged.” A condition that is well treated is viewed very differently from one that is not.
Some roles have defined physical or health benchmarks — for example, a lifting threshold, a hearing standard for loud environments, or proof of certain immunity for healthcare and childcare work. Not meeting a clearly stated, job-related requirement can affect the outcome for that specific role.
Withholding relevant medical history, or a drug screen that cannot be verified, can delay or derail clearance. Honesty almost always works in your favor, because clinicians can document context and, where appropriate, note that a condition is managed.
Many people worry needlessly about conditions that are, in practice, compatible with most jobs — especially when they are well controlled. The general clinical exam a provider performs is a snapshot of your systems, as outlined by the MedlinePlus Medical Encyclopedia, not a pass-fail test of your worth as an employee. Conditions that are frequently not disqualifying when managed include:
The theme is consistent: managed conditions are generally fine. The exam looks for whether you can do the job safely today, not whether your medical history is perfect.
A pre-employment physical is not meant to screen out people with health conditions. Employment law generally requires employers to focus on whether you can perform the essential functions of a job, with or without a reasonable accommodation — for example, a modified lifting technique, an assistive device, or an adjusted schedule. If a finding comes up during your exam, it does not automatically end the process; often it opens a conversation about whether an accommodation would let you do the role safely. The clinician’s responsibility is to describe your functional abilities and limitations objectively, not to make a hiring decision. That decision, and any accommodation discussion, belongs to you and your employer. Understanding this can take a lot of the anxiety out of the visit: the goal is a fair, accurate picture of what you can do, not a search for reasons to say no.
Being asked for follow-up is not a rejection. Often the clinician simply needs one more piece of information — a note from your specialist, a repeat blood pressure reading on another day, documentation of a prescription, or results of an additional test. In many cases, providing that information leads to clearance. If your situation involves returning to work after an injury or illness, a return-to-work exam may be the more appropriate evaluation, and our team can help you understand which exam your employer actually needs.
A pre-employment physical is a routine visit, but your health always comes first. If you ever experience chest pain, trouble breathing, sudden severe weakness or numbness, confusion, fainting, or another sudden serious symptom — before, during, or after any exam — do not wait. Call 911 immediately. An urgent screening is never a substitute for emergency care.
Usually not, when it is well managed. Clinicians assess whether you can safely perform the job’s essential duties, not whether you have a diagnosis. A stable, treated condition is generally compatible with most roles.
A confirmed positive screen can affect an employer’s decision, which is why it is essential to disclose prescription medications at the time of testing. A documented, valid prescription can explain certain results. Policies are set by the employer, not the clinic.
A single elevated reading rarely settles anything on its own. The clinician may recheck it, ask about your history, or request a follow-up reading. Well-controlled blood pressure is generally not a barrier to clearance.
The clinician documents your functional ability objectively; your employer makes the final hiring decision based on the job’s requirements. Our role is an accurate, fair evaluation through our occupational medicine service.
Have a physical coming up and want it done right? Immediate Care Center of Westmont offers walk-in pre-employment physicals at two Westmont locations for employers and employees across DuPage County. We are open Monday through Friday from 9 AM to 6 PM and Saturday and Sunday from 9 AM to 5 PM. Walk in, check in online, or call (630) 324-6825 with questions about your required tests. Bring your employer’s paperwork and your medication list, and we will guide you through the rest.
This page is for general educational purposes and is not a substitute for professional medical advice. If you are experiencing a medical emergency, call 911.
Monday – Friday: 9:00 AM – 6:00 PM
Saturday – Sunday: 9:00 AM – 5:00 PM
