Christmas: Christmas is a holiday falling on Dec. 25. In most of the Western World, it is considered miserly to deny workers a Christmas holiday; it is therefore advised that Aperture Science allow a holiday for Dec. 24, Dec. 25, and Dec. 26, to avoid mutiny.
Inquiry: What is Boxing Day? Boxes=Cubes=Storage Cubes? What do the English know that we don't? Make inquiries.
ADDENDUM: After consulting with our colleagues in the animation business, it has been decided that Dec. 24 and "Boxing Day" do not count. Award holidays as you deem fit, but reserve Dec. 25 or risk being locked in your own office with no provisions save one fruitcake.
ADDENDUM: It is now considered preferable by far to have Aperture Science running full time, at full capacity, three hundred sixty five days a year with one extra day for Leap Years (nice try, Tammie).
There is still a risk of mutiny if employees are made to work on Christmas Day and its alleged partners (Christmas Eve, Cubing Day – note: Boxing Day has been renamed "Cubing Day," to promote solidarity). Managers are encouraged to permit, indulge, and even participate in the following activities, to raise the morale of Aperture Science scientists, employees, staff, administrators, janitorial staff and known associates:
Spruce Up the Work Area (and decorate it)
Acquire Holiday Trees (and decorate them)
Play Holiday Songs (and decorate them)
Sing Along to Holiday Songs (Eugene, you can just hum)
Bake Holiday Treats (and decorate them)