I'm on my way out of a company doing tech work for an SMB (Small or Medium-sized Business) and I happen to be the only expert on various parts of the company's operation. I gained this knowledge through a combination of school, training and experience.
My boss has now asked me to write a step-by-step guide to do much of the maintenance work that comes up on a daily basis, presumably so he can pass off the responsibilities to some poor help desk technician or other employee who has no idea how to do any of it. These are things that really should be done by someone who is qualified, because not only are they complicated (and potentially dangerous if not done right) but there are whole career fields based on doing exactly this.
It is clear he does not plan to hire someone to replace me in these tasks, and I have already warned him multiple times that it's a bad idea to try to cut corners like this or just hope it works out, but to no avail.
I'm not really okay with burning bridges despite the fact that I may never need them again.
Am I obligated to write the guide on "How to do my job" or is this asking something unreasonable? Keep in mind we're not talking about simple fixes or notes, we're referring to entire maintenance and update routines for software that is being hosted for clients.