W-2 Reporting
Employers filing 50 or more W-2 forms must submit the file in a "machine-readable form." The term "machine-readable form" includes file uploads through Webfile for Business and electronic data transfer. The Department will no longer accept W-2 information on diskette, magnetic tape or cartridge 18-track magnetic media.

The 2012 W-2 Handbook pdf format of 2012 W-2 Handbook will provide you with all the information you need to know to submit your W-2 file.

Prior Year W-2 Handbooks
 2011 W-2 Handbook pdf format of 2011 W-2 Handbook
2010 W-2 Handbook pdf format of 2010 W-2 Handbook
2009 W-2 Handbook pdf format of w2hdbk2009.pdf  
 2008 Forms W-2 Magnetic Media Specification Handbook pdf format of 2008 Forms W-2 Magnetic Media Specifications...
2007 Forms W-2 Magnetic Media Specification Handbook pdf format of 2007 Forms W-2 Magnetic Media Specifications...
2006 Forms W-2 Magnetic Media Specification Handbook pdf format of 2006 Magnetic Media Specifications Handbook

Wage Reporting
The Massachusetts wage reporting system is authorized by Massachusetts General Laws, Chapter 62E, and is administered by the Department of Unemployment Assistance (DUA). Employers, including employers who do not have unemployment tax obligations, must file their quarterly wage reports via DUA's QUEST system beginning in January 2010. Visit www.mass.gov/uima for more information.