It's actually very easy for him to change jobs within his industry. The corrections department is struggling to fill jobs in every county and city in America.
Very few people are willing to hold those jobs Because of how depressing and dangerous this positions can be. And it's the whole prison system, from the IT team to the corrections officers, to the tradesmen, to even the nurses. For example, I have an aunt who is a nurse with only an associates degree that has made More than $300,000 every single year for the last 5 years as a corrections nurse in the cali system. She can only do this because there is infinite over time and endless pay incentives, since it's impossible to find normal people to do that job.
Like seriously , sit back for a second and try to think of anyone you know that Would want to volunteer to work at San Quentin or Angola or rikers Island as a free citizen.