I just retired from Calpers. The process was fairly easy once I had the retirement booklet with all the info/forms. I picked one up at a pre-retirement class that I signed up for, but you can also go online and request that they send one, or you may be able to print one out. I turned in my paperwork at a Calpers office the week before Xmas and a man went through it all with me to ensure it was correct. I foolishly did not make an appointment but luckily there was no line so the whole review/submittal process took about 20 minutes. My first day of retirement was Dec 31, 2013 - so not a lot of notice, but since that time Calpers has been good about mailing me updates/info. According to one letter my first check should arrive late Feb or early March (I forget which) so considering the holiday closures it will have taken them about 2 months to get a check to me. Had I given more notice and turned my paperwork in earlier a check could have been waiting for me. I strongly suggest attending a pre-retirement class and getting all your questions answered by the pros.