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Freight Carrier · Diamond Bar, CA

HAPPYWORK INC

1527 SAPPHIRE LN · Diamond Bar, CA 91765

AUTHORIZED FOR:
(840) 248-8000 Tap to call
  • MC #1727967
  • USDOT #4401768 USDOT Active
  • 2
    Power Units
  • 2
    Drivers
  • Carrier
    Entity Type

About this carrier

HAPPYWORK INC is a Diamond Bar, CA freight carrier that is authorized for: in the state of California. This company has 2 truck(s) in their fleet and 2 truck drivers. Their motor carrier number is MC-1727967 and their USDOT number is 4401768.

Sourced from FMCSA SAFER · last filed 06/19/2025 · last updated Jun 22, 2026.

Carrier Details

  • Operating Status AUTHORIZED FOR:
  • MCS-150 Filed 06/19/2025
  • MCS-150 Mileage 70,000 (2024)

Authority & Operations

Operation Classification
  • Authorized for Hire
Carrier Operation
  • Interstate

Cargo Authorized

  • General Freight

Operating Territory

Map of states where this carrier has roadside inspections California — 5 inspections (past 24 months) California — 5 inspections (past 24 months) California — 5 inspections (past 24 months) California — 5 inspections (past 24 months) California — 5 inspections (past 24 months) Arizona — 2 inspections (past 24 months)

Inspection activity   Inspected in 2 states over the past 24 months: CA (5), AZ (2). Home base: Diamond Bar, California.

Safety Record

2 Severe Violations Updated Jul 24, 2026

Crashes (24 mo)

  • 0
    Fatal
  • 0
    Injury
  • 0
    Tow
  • 0
    Total

Behavior Categories (BASICs)

CategoryMeasureViolations Unsafe Driving 7 1 Crash Indicator Not Public — Hours of Service 1.35 3 Vehicle Maintenance 10.94 5 Drugs / Alcohol 0 0 Hazmat Not Public — Driver Fitness 0.9 1

Inspection Summary

  • 7
    Total
  • 1
    Clean
  • 6
    With violations

24-month window ending Jun 26, 2026

Violations Cited 19 unique codes

Critical 4

  • 393.75A3-TAOLTires - All others, leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS1× OOS×1 SW 8
  • 393.9A-LTSILighting - Turn signal - Any inoperative on the rearmost vehicle.1× OOS×1 SW 6
  • 393.9A-LSLIWRLighting - Stop lamps - Both inoperative when required to be on1× OOS×1 SW 6
  • 391.11B2-QDriver cannot satisfy the English language proficiency requirements of 391.11(b)(2) as per FMCSA Enforcement Guidance Memo MC-SEE-2025-0001. Driver failed the Interview.1× OOS×1 SW 4

Hours of Service 3

  • 395.8E-HOSPDHOS (Property) - No driver may make a false report in connection with a duty status. Explain1× SW 7
  • 395.30B1-ELDDFRHOS (ELD) - Driver failing to review records and certify the accuracy of the information.1× SW 1
  • 395.22G-ELDMFVHOS (ELD) - A portable ELD is not mounted in a fixed position and visible to the driver when seated in the normal driving position.1× SW 1

Vehicle Maintenance 10

  • 393.55E-BAir Brake - ABS malfunction lamp defective on trailers manufactured on or after March 1, 19982× SW 4
  • 396.3A1-BALACBrake - Audible air leak from a brake chamber1× SW 4
  • 396.17C-PIOperating a CMV without documentation of a periodic inspection1× SW 4
  • 393.43B-BATVBrake - Air, towing vehicle unable to actuate trailer parking/emergency brakes manually1× SW 4
  • 392.7A-DDriver - Failed to conduct pre-trip inspection or make use of required parts and accessories1× SW 4
  • 393.11A1-CSLRRConspicuity Systems - Truck tractor, lower rear retro reflective sheeting missing on vehicle manufactured on or after July 1, 19972× SW 3
  • 396.5B-LLubrication - Oil or grease leak1× SW 3
  • 393.205C-WRAWFLMIBWheel/Rim - Any wheel fasteners loose/missing/ineffective/broken.2× SW 2
  • 393.95A1Emergency Equipment - Fire Extinguishers - no fire extinguisher present or not properly rated.1× SW 2
  • 393.95A4-EEUSEmergency Equipment - Fire Extinguishers - unsecured1× SW 2

Unsafe Driving 2

  • 392.2-SLLS2State/Local Laws - Speeding 6-10 miles per hour over the speed limit1× SW 4
  • 392.2-SLLLRState/Local Laws - Lane restriction violation1× SW 3

Locations

Physical Address
HAPPYWORK INC
1527 SAPPHIRE LN
DIAMOND BAR, CA 91765
Mailing Address
Same as physical.

Location on Map

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