Ever-Monday Research Facility

Monday already? I swear, it feels like it was just yesterday...

— Subject E5-24601

Killing someone is easy, but killing an idea takes a lot more effort and disregard for human rights. The Ever-Monday Research Facility used to be a mid-tier corporate structure, where workers went about their daily lives as another cog in the corporate machine. It has now become the primary site of R&D for the Taskforce Monday in their quest to contain Mondays.
It isn't Mondays themselves that are the problem, but the idea of just how miserable they are have become a memetic infohazard, leading to billions lost every year in lost productivity and general complaining. To try and figure out the best way to fight against the Monday mood, the Taskforce has created a self-contained office in which it is always Monday so they can study its effect and attempt various harebrained schemes to fix it.
No one really volunteers for what is basically Hell, so the Taskforce have turned to unorthodox means of procuring test subjects.

Basically Hell

LET ME OUT

— Scrawled in blood on a whiteboard

Although the Ever-Monday Research Facility retains much of its trapping as an office, with endless rows of cubicles, unpleasant lighting, 'motivational' posters, and so on, it is a simulated groundhog day of Mondays. Subjects are put through a combination of drugs and brainwashing so they'll keep thinking that every day is another Monday, while researchers watch and perform experiments.

by The Matrix

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About 10% of the workers are plants, Taskforce Members sent in to aid in those experiments and observe the herd up close.
When necessary, they also remove anyone who's broken through the programming and realized that something is going on.

Subjects are categorized by a stability index with complicated names, but more informally named after the days of the week. Fridays are the most sane subjects, while those approaching Mondays are probably a danger to everyone around them.

Taskforce Monday

Everyone hates Mondays, but there's only one Taskforce trying their best to kill it. Sponsored by several Megacorps fed up with the profits and productivity lost on Mondays, the Taskforce Monday is a infohazard fighting force who's bringing the fight to Mondays.
They run the Ever-Monday Facility, and that should be your first hint that they're not really the good guys after all.

Experiment Log

There's science to be done, if one is to defeat Monday.

Test 17-A: Java Experiment

Excessive amounts of Java is sufficent to defeat the Monday Mood for a time, but soon lead to Javamania and the experiment was cancelled after three subjects were killed and eaten.

Test 84-C: Sewer-Gator Motivator

What if subjects felt a terror greater than their fear of Mondays? Cancelled after the Sewer-Gator used in the test escaped and, again, ate three subjects.