Scientists in Switzerland made the shocking discovery last Tuesday that the social phenomenon of 'Mondayitis' has made its way into Tuesday.
Confirmation of this was made when employees developed the telltale signs- lack of energy and increased apathy- two days in a row.
"This is a warning to employers everywhere" Professor Franz Gutenberg said.
"I don't know what came over me,' fellow scientist and Mondayitis sufferer William Edison said 'I was tired, irritated...I just couldn't be bothered."
The social experiment- conducted in a large, underground lab- was initially examining the factors contributing to the widespread disease, which oddly enough only appears after weekends. Experimenters were shocked to find the same symptoms appearing after experimentation finished.
Scientists have called the White House to brief the president.
Readers are warned that this is not the same as "3:30itis", which develops lack of concentration in the sufferer between lunch break and clock off time at work.