Errm do you know where the document were stored..?
So, the development teams had done good work and software testing was on schedule. However to run the new system, we'd need a new fault tolerant "mainframe", so my boss and I hegotiated a good deal on price and delivery date. Shortly after the deal was signed, the Finance Director walks into my office and "sadly" announces that the IT Director (my boss) has left the company with immediate effect, but not too worry because they had a shortlist of propective candidate. A mysterious hand materialised behind his head and started to write on my office whiteboard. "... it won't be you..."
Being a professional I warned my deputy that my life expectancy in my role was limited and started to tidy my paperwork so he wouldn't be left in the lurch. Part of the tidying was to pass the mainframe contract negotiation paperwork to the FD's deputy at his request. About four weeks later the new IT Director had arrived and I was gone two weeks later. The new boy made it very plain I was not wanted and handed over a departure package.
Four months later I had a grovelling call from the IT Director; "Did I know where the contract documentation for the mainframe had gone?" This discount was worth about four times my departure package. My reply: "I gave you the keys to the files cabinet at my departure interview, but you could talk to Finance." I understand, in the absence of documentary proof, the eventual terms from the manufacturer were far less generous.