ON SATURDAY copywriter Mita Diran tweeted about working for 30 hours straight at her Indonesian agency job.

30 hours of working and still going strooong. — Mita Diran (@mitdoq) December 14, 2013

The next day the 24-year-old was dead.News_Image_File: Mita enjoying a toastie.

Not long after writing what would be her final tweet, Mita collapsed, fell into a coma and didn't wake up.

She suffered heart failure and died.

News_Image_File: Mita called herself a "geek".

It is not yet clear what caused Mita's death.

News_Image_File: Mita was quirky.

Her father, also an ad agency employee, attributed his daughter's shock death to overwork. News_Image_File: Mita's dad knew the pressures of agency work.

While local media reports blamed long hours coupled with her addiction to energy drinks.

Spent half the night writing copy and finishing up a 23-page deck with a glass of vodka/red bull mix and now I can't sleep. SO BEAR WITH ME. — Mita Diran (@mitdoq) November 6, 2013

Her chilling Twitter feed shows the life of a young copywriter struggling with the excessive demands of her work at the Indonesian arm of global ad agency Young & Rubicam. The agency is owned by Oglivy & Mather.

Alright, one full week of going home past 2am from the office. Ladies and gentlemen, I believe we just broke a record. — Mita Diran (@mitdoq) November 8, 2013

Advertising agencies are known for having a high pressure environment, as employees struggle to meet short deadline demands.

The more you spend time at the office, the more you consider moving your bed here. Preferably next to the fan. #AgencyLife — Mita Diran (@mitdoq) October 29, 2013

"One does not simply leave at 6PM." #AgencyLife — Mita Diran (@mitdoq) September 30, 2013

Feeling the stress, in 2011 Mita took to Tumblr with an open plea.

News_Image_File: All Mita wanted were "kicks and giggles".

But her cry for help was ignored and she continued working at an unsustainable pace for years - often finishing at 2am. Or 4.45am.

So it's 2AM, Friday night and I'm at the office, nibbling on junk food with 9 other creatives. I'm actually okay with this. #AgencyLife — Mita Diran (@mitdoq) October 25, 2013

4.45 AM and I'm finally home. — Mita Diran (@mitdoq) October 25, 2013

The self-proclaimed geek managed to stay awake with a mix of Red Bull and vodka.

First day back at work after being sick for three days, and I spend over 12 hours at the office. #AgencyLife — Mita Diran (@mitdoq) October 17, 2013

In the meantime, how to revive all my dead brain cells, killed in the nasty battle of Chick Flick Marathons After Days of Working Overtime? — Mita Diran (@mitdoq) September 30, 2013

Her final Tumblr post, titled "She is poisoned", poetically detailed how she felt like a hostage in a life where she was losing sleep, her appetite and her mind.

News_Image_File: Mita's final post tells how she feels poisoned.

After her death, other agency workers came out in support for Mita, hoping to stop the tragedy happening again.

Copywriter Mita Diran died after overworking herself. My creative friends, tell your boss you're too young to die. http://t.co/pHVIPKdj0f — Hendri Cahyana (@hendri) December 17, 2013

They begged young workers not to work themselves to hard, to think about their health and remember it is just a job.

This is insane- no campaign is worth this. We're not curing cancer, it's just advertising: http://t.co/Zpc69AVCEk — Nagham (@nagham) December 16, 2013

Young & Rubicam released a statement, advising it would shut its office on the day of her funeral to pay respects to a much-loved employee.

News_Image_File: The agency lost one of their own.

Don't work too hard, take a break and enjoy life.