The University of Michigan, an encyclopedic survey ... Wilfred B. Shaw, editor.
University of Michigan.
Vacation and Holidays

Regular staff members other than faculty on an academic-year basis receive the various benefits described below:

Most professional and administrative staff and 12-month faculty receive twenty-four work days per year as vacation allowance, cumulative to two years. Other level professional and administrative staff, clerical and office staff, technical, trades, and service workers also receive the same vacation allowance after eight years employment, eighteen days per year for from five to eight years employment, and twelve days per year in the first five years of Page  41employment, except as altered by union contracts.

Holidays are recognized on New Years Day, Memorial Day, Fourth of July, Labor Day, two days at Thanksgiving, Christmas Day, and three "swing" days between Christmas and New Years Days, except as modified by union contracts.