I've had problems in my last jobs with things like the following:
My boss tells me something and I understand to do it in some way, I do it but this thing ends up causing a problem. Then there's an argument with "Why have you done that?" And my point is "but you told me so..." And the boss, "I didn't tell you so!..." Maybe some of those things have been my misunderstanding, but I consider my memory to be good, so it's more likely than it's been my bosses faults rather than mine... But I have to bear the guilt as there's no way to prove what was said exactly as it was told.
On other occasions I've had problems with things like "Why have you done something like that?" And my point is... "Well I wasn't told that I couldn't do that, and from the previous experience I have I considered it to be fine." But from boss point of view it's not... It looks like I have to be some type of mind reader... I also cannot ask every little thing of the project because it would slow it down a lot.
So I've thought that for future occasions I could do something like this:
1) From the first day of work ask for an email with good defined guidelines to work which can be extended in any moment in future emails.
2) If I feel something might cause important future problems asking him to send an email with a detailed description of what to be done, I think I could ask for it about once a week.
In this way if something is in the guidelines or was sent as a request to one of my questions about something that might give problems then OK, shame on me, and if I get enough of those no problem in being fired, but if it was reflected on the emails to be done that thing, then shame on my boss, I should be asked for forgiveness, and if next time it's my fault we're equal.
Do you think it's a good idea to ask for something like that?
I'm not asking for a detailed description of everything once per week, I'm asking for a detailed description of something that I feel might give serious problems on the future.
It hasn't happened to me in every job, it has happened on my last 2 ones specially on the last one, on the other 2 ones I had a general good opinion from my bosses and even in the third one I had it until those things started happening (not that I were the best one, but that I were a competent employee), I even got some recomendation letters from my first 2 jobs, defining me as a competent employee.