labormariticide
Killing your work-spouse. Usually with a shoe, and it's always the Dansko. People who do this are either a psycho or just really tired of your work-spouse's annoying habits.
She screamed at the photocopier, then went after her work-spouse.
He texted her, 'I’m gonna kill you,' and he meant it.
They fought over the coffee. That was the start of the labormariticide.