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U&O - use and occupancy
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UAV - unmanned aerial vehicle
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UBI - usage-based insurance
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UBTI - unrelated business taxable income
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UCC - Uniform Commercial Code
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UCD - unemployment compensation disability
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UCI - unemployment compensation insurance
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UCR - usual, customary, reasonable (reimbursement)
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UEL - upper explosive level
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UEP - unearned premium
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UEPR - unearned premium reserve
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UFTA - Uniform Fraudulent Transfer Act
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UIM - underinsured motorist
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UIMV - underinsured motor vehicle
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UJF - unsatisfied judgment fund
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UL - umbrella liability
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UL - Underwriters' Laboratories
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ULC - Underwriters Laboratories of Canada
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UM - uninsured motorists
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UMV - uninsured motor vehicle
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UNL - ultimate net loss
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UP - unearned premium
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UPR - unearned premium reserve
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UPS - uninterruptible power system
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URL - uniform resource locator
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URMIA - University Risk Management & Insurance Association
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USDA - U.S. Department of Agriculture
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USERRA - Uniformed Services Employment and Reemployment Rights Act of 1994
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USGLI - U.S. Government Life Insurance
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USITC - U.S. International Trade Commission
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USL&HW - United States Longshore and Harbor Workers' (Compensation Act) of 1927
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UST - underground storage tank