Worked for a firm producing lots of powerpoints based on excel data. One colleague basically spent her time checking every figure on these charts, to make sure they were correct down to the n'th figure after the decimal because it made so much difference if the number was 3.45 or 3.449! Thats all she did.
So the week after our joint manager went on maternity leave, she informed me I was going to have a disciplinary to investigate why a particular report hadnt been done and emailed to the clients. I sat there as she told me and gave me a letter confirming, saying did they really want to do this? She confirmed they did. I immediately told the woman who was covering HR (but had no HR experience) that I wanted to spend the week until this disciplinary focusing on proving it wasnt my fault but I could prove to her in one email. They told me that the meeting would go ahead next week as arranged. The colleague wanted to attend the meeting but I refused to allow it. So I sat with HR woman and a friendly person, and produced my email sent a month earlier to evil colleague, maternity leave boss and others stating that the report had been completed and was ready to be checked. I also produced a mountain of evidence that colleague was bullying me. The disciplinary was stopped but nothing was done about colleague.
6 months later maternity leave boss was back part time, and informed me in my annual review that bullying colleague was to be my new boss as they were training her up to be management. I complained but was told it would be fine.
Luckily i had an interview the next day, for a better job with school holidays, which I got and delighted in telling my old job that I was leaving. Might have mentioned a few times my extra long holidays to really make her feel bad.
I met the nice co-worker a year later. They had made a lot of folks redundant and it had fallen to evil co-worker to actually do the work rather than check it as she was their golden girl and kept on. The management then discovered what all the other staff had been telling them that all she was good for was checking but absolutely useless at doing the actual work. Suddenly she was off the management track.
I love my new job, but a new person was brought in to work with me. She was doing an excel based job with no excel experience. Was nice enough to start with, but after a year her true colours started to come out. She acted like my boss rather than co-worker. Wanted to dump all the jobs she hated onto me but keep the high profile ones for herself. I eventually was pushed into complaining to HR (this time a proper department) who took things a little more seriously. We had a meeting where we were both meant to list all the tasks we completed with a view to reallocating them to make her life easier. I had a full list of jobs I did. She had nothing and put on the tears that she was too busy to write a list. It was clear from this meeting she just thought she could dump the crap on me without authorisation. Every job she "told me to do", if I even complained, I got told "its a job for the secretary".
Eventually she handed in her notice, got authority to leave early as she had put in so much overtime but get paid for the same time. I got many calls from other staff who also were fed up of her bullying and were glad she was leaving. I was told that all the overtime had been her coming in at weekends just to sit around doing nothing but be there to claim overtime. She spent her last weeks compiling a "to do" booklet for the replacement. It was basically saying "tell peri to do this that and the other" and slagging the boss off. We went through this book removing all examples of this after she left.
Her replacement was interviewed away from her so they would never meet, but the bully knew all about her. From other things she had said I realised she had been reading the bosses email when he left it open (which he did frequently, we were always locking it for him). The new replacement keeps asking me where the rest of the work is because it doesnt take her half as long because she is competent unlike her predecessor.
It doesnt seem much now but working life with the bully was hell, before she resigned I was seriously looking for other jobs even though I loved every others aspect of working there. I was miserable. Our boss, hated working with her so spent more and more time working from home where possible just to avoid her air of gloom. Another department who she had worked for ten years previously had said they were shocked she was ever rehired after all the crap they had put up with.