Alabama
       Title 25
       Alabama Department of Labor Market
       Form A-4: Employee's Withholding Exemption Certificate
 
Alaska
       Current Alaska Statutes:  Title 23 (Labor and Workers' Compensation)
       Department of Labor-Employer Page
 
Arizona
       Arizona Revised Statutes; Title 23: Labor
       Form A-4: Employee's Withholding Percentage Election
 
Arkansas
       Title 11
       Arkansas Department of Labor
       Form AR4EC: Employee's Withholding Exemption Certificate
 
California
       California Labor Code
       California Employment Development Department
       California Department of Industrial Relations
       California Department of Fair Employment and Housing
       Form DE 4: Employee's Withholding Allowance Certificate

       California State Disability Insurance
       State Disability Insurance Provisions - English  
       State Disability Insurance Provisions - Spanish

       California Paid Family Leave Brochures & Posters
       Paid Family Leave Brochure - English
       Paid Family Leave Brochure - Spanish
       Paid Family Leave Poster - English
       Paid Family Leave Brochure - Spanish
       Fact Sheet - English
       Fact Sheet - Spanish
 
Colorado
       Colorado Department of Labor and Employment
 
Connecticut
       General Statutes of Connecticut; Title 31: Labor
       Connecticut Department of Labor
       Form CT-W4: Employee's Withholding or Exemption Certificate
 
Delaware
       Department of Labor
 
District of Columbia
       Form D-4: Employee's Withholding Allowance Certificate
 
Florida
       Florida Economic Development Employer Page
 
Georgia
       Title 34
       Georgia Department of Labor
       Form G-4: Employee's Withholding Allowance Certificate
 
Hawaii
       Department of Labor and Industrial Relations
       Form HW-4: Employee's Withholding Allowance and Status Certificate
 
Idaho
       Statutes of the State of Idaho; Title 44: Labor
       Idaho Department of Labor
 
Illinois
       Illinois Compiled Statutes; Chapter 820: Employment
       Illinois Department of Labor
       Form IL-W4: Employee's Illinois Withholding Allowance Certificate
 
Indiana
       Indiana Code; Title 22: Labor
       Indiana Department of Labor
       Form WH-4: Employee's Withholding Exemption and County Status Certificate
 
Iowa
       Title III, Subtitle 2: Employment Services
       Workforce Development Department
       Form IA W4: Employee's Withholding Allowance Certificate
 
Kansas
       Chapter 44
       Laws & Regulations
 
Kentucky
       Kentucky Revised Statutes; Title XXVII: Labor and Human Rights
       Cabinet for Workforce Development
       Form K-4: Employee's Withholding Exemption Certificate
 
Louisiana
       Title 23: Labor and Worker's Compensation
       Department of Labor – for Businesses
       Form L-4: Employee's Withholding Exemption Certificate
 
Maine
       Maine Revised Statutes; Title 26: Labor and Industry
       Department of Labor
       Form W-4ME: Employee's Maine Withholding Allowance Certificate
 
Maryland
       Maryland Department of Labor Licensing and Regulation
       Form MW 507: Employee's Maryland Withholding Exemption Certificate
 
Massachusetts
       Administration of the Government; Title XXI: Labor and Industries
       Human Resources Division
       Form M-4: Employee's Withholding Exemption Certificate
 
Michigan
       Michigan Compiled Laws; Chapter 408: Labor
       Business Services
       Form MI-W4: Employee's Michigan Withholding Exemption Certificate
 
Minnesota
       Minnesota Statutes 2000; Chapters 175-186: Labor, Industry
       Minnesota Department of Labor and Industry
 
Mississippi
       Title 71
       Form 89-350: Mississippi Employee's Withholding Exemption Certificate

 
Missouri
       Missouri Statutes; Title XVIII: Labor and Industrial Relations
       Missouri Department of Labor and Industrial Relations
       Form MO W-4: Employee's Withholding Allowance Certificate
 
Montana
       Montana Code Annotated; Title 39: Labor
       Montana Department of Labor and Industry
 
Nebraska
        Nebraska Department of Labor
 
Nevada
       Nevada Department of Business & Industry 
       Nevada Labor Commission
 
New Hampshire
       Department of Labor
 
New Jersey
       New Jersey Statutes; Title 34: Labor & Workmen's Compensation
       New Jersey Department of Labor
       Form NJ-W4: Employee's Withholding Allowance Certificate
 
New Mexico
       Department of Labor – Employer Services
 
New York
       New York Department of Labor
       Form IT-2104: Employee's Withholding Allowance Certificate
 
North Carolina
       Chapter 95
       North Carolina Department of Labor
       Form NC-4: Employee's Withholding Allowance Certificate
 
North Dakota
       North Dakota Department of Labor
 
Ohio
       Ohio's Revised Code; Title 41: Labor and Industry
       Department of Job and Family Services - Employer
       Form IT-4: Employee's Withholding Exemption Certificate
 
Oklahoma
       Title 40
       Oklahoma Department of Labor
 
Oregon
       Department of Labor - Employer
 
Pennsylvania
       Pennsylvania Department of Labor and Industry
 
Rhode Island
       Rhode Island General Laws; Title 28: Labor and Labor Relations
       Rhode Island Department of Labor and Training
 
South Carolina
       South Carolina Code of Laws; Title 41: Labor and Employment
       South Carolina Department of Labor
 
South Dakota
       South Dakota Department of Labor
 
Tennessee
       Tennessee Department of Labor
 
Texas
       Texas Workforce Commission
 
Utah
       Utah Code; Title 34A: Utah Labor Code
       Labor Commission

 
Vermont
       Vermont Department of Labor
       Form W-4VT: Vermont's Employee's Withholding Allowance Certificate
 
Virginia
       Virginia Department of Labor and Industry
       Department of Human Resource Management
       Code of Virginia: Title 40.1 Labor and Employment
       Form VA-4: Employee's Virginia Income Tax Withholding Exemption Certificate
 
Washington
       Title 49: Labor Regulations
       Washington Department of Labor and Industries
 
West Virginia
       West Virginia Division of Labor
       Form WV/IT-104: West Virginia Employee's Withholding Exemption Certificate
 
Wisconsin
       Labor Standards
       Wisconsin Department of Workforce Development
       Form WT-4: Employee's Wisconsin Withholding Exemption Certificate/New Hire Reporting
 
Wyoming
       Wyoming Department of Employment