WeChat or WeWork? That is a question many office workers are encountering these days.

Nearly 90 percent of users of popular Chinese instant messaging app WeChat use it for work on a daily basis, according to an annual survey by the app’s developer Tencent.

The “WeWorkers” use WeChat for tasks ranging from communication to transferring files to making transactions.

"As a restaurant owner, I find it much easier and more efficient to communicate with my employees through WeChat," said Zhou Yuxiang, a restaurant owner in Beijing. "I can send them files through a group message, or assign tasks to individuals through messages. It is less formal than emails. Also, sometimes if there's a miscommunication, typing it out on WeChat can avoid the embarrassment of confronting each other face to face. "

Originally designed to just let friends keep in touch, it is now quite common for people to friend those who may not actually be friends. 

According to the Tencent report, about 60 percent of survey respondents say their new contacts on the app are work related. And some complain that WeChat has blurred the line between work and life.

"For some group projects we normally create a WeChat group, and inevitably you have to add your colleagues, or even just work-related people as your friends. Sometimes I feel a bit uncomfortable because there is some private content I share on the platform, like where I went for a drink or pictures of my family," said a WeChat user named Wang Hao.

Despite the fact that an increasing number of users are seeing WeChat as a means of communication with colleagues, the report shows more than 60 percent of users still regard WeChat as a private sphere, a place to document their lives and share moments with friends. But the work function of WeChat now makes it almost impossible for users to entirely separate their private life from their professional life, unless they create another account.