Starting in the first quarter of 2013, if you have 25 or more employees at any one time in the first quarter, you MUST file form UIA 1028 electroncially.  To file electronically, you must complete the registration for the Michigan Web Account Master (MiWAM) on the michigan.gov website, as soon as possible.  The form is due April 25, 2013. 
Click here for the link to the MiWAM page that talks about this new requirement.
Click here for the MiWAM sign up page to register for a Michigan Web Account. 
Beginning in 2013, employers with more than 25 employees must file quarterly reports online.

Product:  Sage 100 ERP (MAS 90) Payroll
This update works with versions:
4.30.0.18 - 4.30.0.23
4.40.0.0 - 4.40.0.10
4.50.0.0 - 4.50.5 (also includes 4.50.6.0)
5.00.1.0 (also includes 5.00.2.0)

The changes  include: 
*The quarterly tax report variance calculation now includes the additional medicare rate of .9%
* The employee totals verification report no longer prints a difference when an employee has additional medicare
   wages or tax
* Additional medicare wages field has been added to the quarterly 941 printing screen
* In Federal eFiling and Reporting the correct additional medicare wages populate to the 941 form

941 Form 2013 Changes:
* Quarterly 941 printing has been updated for the 2013 IRS changes to the 941 Form (rev. January 2013).  This update
   has text, line number and calculation changes to the Report Formats, 'Entire Form' Pre-Printed' and 'Worksheet'
* Schedule B has been updated

NOTE: 
The pre-printed 941 Form and pre-printed Schedule B formats have been designed  based on the downloaded 941.pdf and Schedule B.pdf from the IRS website.   If you use the pre-printed form formats, the alignment may need to be adjusted or the form may need to be modified.

Some Sage 100 ERP (MAS 90) users have encountered alignment printing problems.  Depending on workstation font settings, you may or may not experience this issue.