What is the proper way to handle a situation where a coworker (call them "Not-Started") is asking repeatedly, every day, in person, or via email the status on their project, when I am working on an unrelated different project for another coworker, and the original coworker's project is not started?
Do I keep telling them "it is not started"?
Do I tell them "I will let you know when I start working on it" (and repeat that every day to them, and any time they ask)?
I can also compose an email, and include my boss, and the "Currently-Working-On" coworker whose project I am actually working on, and tell the "Not Started" coworker that I am currently working on another project and your project is not yet started... Basically here I will include every person who is involved somehow and expose the transparency of the situation to all, even if that was not explicitly asked of me. What was explicitly asked was 'What is the status of the not-started project by "Not-Started" coworker.
Note: the "Not started" coworker is not aware or may not be aware of my other projects I am working on.