What 398.6-MW means in plain language
FMCSR 398.6-MW covers violations of hours-of-service regulations that apply specifically when you're transporting migrant workers. These rules exist because transporting workers—especially those moving between states for seasonal employment—creates unique safety considerations around driver fatigue and rest.
If you received this citation, it means an inspector found that your operation didn't comply with the hours-of-service standards that apply to migrant worker transportation. This could involve running loads without adequate rest, failing to maintain accurate records of your time on duty, or not following mandatory break and sleep requirements.
Unlike some violations that result in immediate out-of-service orders, this code is not eligible for OOS placement. That means you weren't pulled off the road on the spot—but the citation itself carries enforcement weight and will appear on your driving record and your carrier's safety profile.
What our enforcement data actually shows
Across our database of 13 million+ roadside inspections, 398.6-MW is extremely rare. We have recorded 1 citation all-time, with 1 in the last 12 months and 1 in the last 90 days. This code ranks #2796 of 3,036 FMCSR codes by citation volume.
The out-of-service rate for 398.6-MW stands at 0.0%—meaning in the single instance we've tracked, the driver was not placed out of service. For context, the all-FMCSR average OOS rate is 31.4%, so this code is far less likely to result in immediate roadside removal compared to most violations.
However, rarity doesn't mean the violation is insignificant. It reflects that most drivers and carriers either comply with migrant worker HOS rules or are cited under more general hours-of-service codes (395.x series) instead. The fact that you've received a specific 398.6-MW citation suggests an inspector identified conduct that fell outside the regulatory framework for this specialized operation.
Who gets cited most
Our inspection records show that in the last 180 days, Georgia accounted for 1 citation of 398.6-MW, with 0 out-of-service placements (0.0% OOS rate).
Given the extremely limited citation volume for this code, geographic patterns are not yet statistically robust in our database. However, migrant worker transportation is concentrated in agricultural and seasonal labor corridors, which tend to cluster in the Southeast, Midwest, and West Coast regions.
Among carriers, our data shows Estes Express Lines (USDOT 121018) with 1 citation for this code. This represents a single enforcement action and should not be interpreted as a pattern; the company operates hundreds of thousands of miles annually.
How severe is this compared to similar codes
Within the Hours-of-Service Compliance category, the broader code 398.6 (Violation of Hours of Service regulations for Transportation of Migrant Workers, without the -MW subcode) shows 10 citations all-time with a 40.0% out-of-service rate.
Your specific citation (398.6-MW) has a 0.0% OOS rate versus that 40.0% rate for the parent 398.6 group. This suggests that when inspectors cite the -MW subtype, they are less likely to remove the vehicle from service—possibly because the violation involves paperwork, record-keeping, or procedural gaps rather than acute safety hazards.
In contrast, general hours-of-service violations under FMCSR 395 (the main HOS regulation) carry far higher enforcement volume and OOS rates. The 398.6 codes represent a specialized subset applied when the migrant worker transportation context is explicit.
How to avoid it
Our inspection data shows patterns that offer concrete guidance:
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Verify your ELD setup before every shift. Co-occurring violations included three separate ELD documentation codes: missing driver's manual (395.22H1-ELDNUM), missing instruction sheets for data transfer (395.22H2-ELDNISDT), and missing malfunction procedures (395.22H3-ELDMF). Before you depart, confirm your ELD is properly loaded with all required documentation and that you understand how to use it. If your carrier hasn't provided these materials, request them immediately.
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Never operate while fatigued or ill. Our records show that both 392.2-SLLSIV and 392.2-SLLTCD (Operating a CMV while ill or fatigued) commonly appeared in the same inspection as 398.6-MW violations. Fatigue and illness are often the root cause of HOS violations. If you're tired, contact your dispatcher. If you're sick, stay home. No load is worth the safety risk or the citation.
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Log your actual on-duty and off-duty time accurately in real time. Don't estimate or back-fill records at the end of the day. If you're transporting migrant workers, the rules are stricter than standard commercial operations, and inspectors pay closer attention to log accuracy. Update your ELD as you transition between on-duty, driving, and off-duty status.
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Plan your route to include mandatory breaks before you start driving. Migrant worker HOS rules require rest periods. Map out your rest stops and fuel stops before departure. This prevents the temptation to run longer to make up time.
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Keep your vehicle documentation organized. Vehicle makes cited include Hyundai TR and Freightliner units. Regardless of your equipment, ensure your logbook device, manifest, and any special permits for migrant worker transport are immediately accessible during inspection. Missing or incomplete documentation is often what triggers citations.