This is gonna be a bit of a hard to answer question with there being too many variables.
I'm a worker. And i have missed plenty of deadlines.
I have come to the personal opinion that a missed deadline is always the fault of poor management. This is of course not entirely true but in most cases is seems the management overscoped the project and/or made a silly deadline.
Note: i think it's worth mentioning that i have only ever worked in China!
Real life example of older workspace: (You can skip the the last paragraph, I'm just venting)
I was asked create a program for printing data to paper, it should be configurable and easy. I talked to him about different ways to do this, and we agreed on a WYSIWYG solution resembling Word. I sat down for a few days a created a complete project spec and specified: Beta after 3 months and an extra 2 months for test and patch. (I'd like to give 1 month but that has proven insufficient in the past, with changes and whatnot) Totaling 5 months. I gave him the document, he took the paper, i went away and after a few minutes he mailed me "OK" for everything (He mentioned no specifics), and i have 1 month to finish it. (I assume he skimmed it and trashed it) After 6 months the project wasn't even finished seeing as he kept coming to me with project changes.
Looking back i see many cases where this happened. Overscope, changes or impossible deadlines. I did consider that perhaps i got it backwards. That 1 month means i need to thin out the project in order to fit that time-frame. But this was not communicated. I've seen my coworkers start on projects that from the onset has overtime included. So i have fallen to the understanding that project managers can't manage projects. If i work 8 hours a day for the entire period (not 9gag!) then a missed deadline is not my problem. And as such, I've grown to ignore deadlines altogether cause it's the responsibility of the manager that the deadline and project spec matches.
Ok. So i do not wish to ask whether or i was wrong or not is this example. (You're welcome to talk about it) But i would rather like to know, what are the symptoms of poor management
And with the authority game and my competence at stake. What can i do as a worker when presented with a "Death march".