When it comes to jobsite safety, one of the simplest but most important tools in a contractor’s arsenal is the safety vest. Yet, despite its simplicity, navigating OSHA safety vest requirements can be confusing, especially when visibility, classification, and usage vary by environment and job function.
Here’s how to simplify compliance and ensure your team stays protected and visible with the right construction vest for the job.
Why Safety Vests Matter
Every year, countless workers are injured or killed due to visibility-related accidents on construction sites and roadways. The Occupational Safety and Health Administration (OSHA) requires high-visibility clothing to reduce this risk, especially in high-traffic or low-light environments.
Safety vests are the first line of defense. They alert drivers, equipment operators, and other personnel to a worker’s presence, reducing accidents and saving lives.
OSHA Safety Vest Requirements at a Glance
While OSHA doesn’t provide extensive specifications for vests, it defers to the American National Standards Institute’s (ANSI) standards. Specifically, OSHA references ANSI/ISEA 107, the standard that defines visibility classes and garment performance. Here’s what you need to know:
1. ANSI Classifications
- Class 1: For low-risk environments (e.g., warehouse staff or parking attendants). Requires minimal high-visibility clothing.
- Class 2: For moderate-risk environments (e.g., road construction with speeds under 50 mph). Requires more reflective material and brighter colors.
- Class 3: For high-risk environments (e.g., highway construction, nighttime work). Requires full-body visibility with sleeves and more retroreflective material.
Most construction vest usage falls under Class 2 or Class 3, depending on traffic speed and proximity to moving vehicles.
2. Color and Reflectivity
Vests must be fluorescent (yellow-green, orange-red, or red) for daytime visibility and have reflective tape for low-light conditions. This ensures the worker is seen from all angles.
3. Proper Use
Even the best high-visibility vest won’t protect a worker if it’s dirty, damaged, or worn incorrectly. OSHA requires that vests be kept in good condition and worn over clothing to remain fully visible.
Common Compliance Mistakes Contractors Make
Experienced contractors can sometimes overlook key details regarding OSHA safety vest requirements. With jobsite demands constantly shifting, it’s easy to grab whatever vest is on hand without considering whether it meets the standards for that specific task or environment. But any of these small oversights can lead to costly fines—or worse, serious accidents:
- Using the wrong class vest for the job site. For instance, Class 2 may be sufficient during the day but not for nighttime work or high-speed traffic zones, which require Class 3.
- Failing to replace worn or faded vests, which lose their visibility over time and no longer meet ANSI standards.
- Not training workers on proper usage. An unzipped vest, covered by jackets, or tucked under tool belts won’t provide full visibility.
- Ignoring nighttime requirements, especially during shoulder seasons when daylight fades quickly. This often results in workers being under-equipped for evening tasks.
- Mixing non-ANSI gear with compliant clothing. Even if a vest is bright, it doesn’t guarantee it meets visibility and reflectivity standards unless it’s ANSI-rated.
Avoiding these pitfalls starts with understanding the regulations, evaluating each work environment, and ensuring your crew is equipped with the right high-visibility clothing for every shift.
Choosing the Right Construction Vest
To stay compliant and protect your team, make sure you’re choosing vests based on the jobsite environment (daytime, nighttime, climate, or weather conditions), the traffic proximity and expected average speed, and worker roles (like flaggers, machine operators, general laborers, and so on).
For example, a flagger on a busy roadway at night will require a Class 3 high-visibility vest, while a delivery driver in a yard may only need a Class 1.
At Interwest Safety Supply, we offer a wide range of ANSI-certified construction vests and high-visibility clothing tailored for your industry needs.
How Interwest Helps Contractors Stay OSHA-Compliant

We simplify compliance by offering expert guidance on vest selection and OSHA requirements, helping contractors choose the right gear for every job. For larger crews, we provide bulk ordering options to ensure every team member is properly equipped. And with fast shipping nationwide, you can keep your projects on schedule without delays in safety gear delivery.
Our team understands the specific challenges faced by contractors. Whether you’re outfitting a crew for highway construction or updating your warehouse safety gear, we make compliance easy.
After all, ensuring high visibility isn’t optional—it’s a legal and ethical responsibility. Investing in the right safety vest is one of the easiest ways to meet OSHA safety vest requirements and protect your crew. By understanding ANSI classes, assessing your jobsite risks, and working with a trusted supplier like Interwest, you can simplify compliance and focus on what matters: getting the job done safely.
Need Help Selecting the Right High-Visibility Vest?
Contact Interwest Safety Supply today for expert recommendations and ANSI-compliant gear that keeps your team safe and visible.
