A similar question to this one, but obviously with different personal circumstances, I'd be grateful of people's ideas on this:
The basic situation
I've worked for around a year for an employer developing software for them, and recently the workload has at least tripled, with promises to hire extra people going unmet. In the last few weeks, it's become a very blame-cultured environment, with the pressure from management to deliver the product we had scheduled for 6 months time in the next 2 weeks.
If I were to write a completely honest resignation, it would be along these lines:
Dear [CEO's Name],
I am writing to give you notice of my resignation from my post as [job title]. Since we recently received new deadlines, the work environment has been highly pressured, at a level that I don't consider maintainable.
During the past few months, you've acknowledged several times our desperate need for more staff, but have taken no action to recruit these staff, leaving us overworked and underpaid for our efforts.
As the newest addition to the team, in these high pressure times, I've been made out to be less competent than I am by my line manager, who admitted to me that his only option was to put blame on me, rather than take it himself.
After a few weeks ago, it was suggested that we faced the possibility of termination if our new, unrealistic, deadlines were not met, I started looking for new work, and I have now formally been offered a job with a larger, more established company, as part of a team, rather than in a department of one.
I wish you the best of luck in the future, and will work hard to make the transition ahead as smooth as possible.
So, as the main question, how much of the above honesty should get through?