Pros
People often join as unemployed temps. People join hoping to obtain medical care for hard to insure relatives.
Cons
KP's management is dominated by doctors and nurses. You are stepping back 25 years in corporate standards of conduct. Most software is old. Very poor benefits. Educational benefits are reimbursement of $1000/year, paid only for a class that is directly related to your current position. Dental $1000/year. Vision - all promised savings lost to the markup in the KP optical shops. Medical...Kaiser doesn't provide the quality of medical care of other medical systems. You will find you have no recourse if mistreated. Your contract provides for "arbitration". Supposedly Kaiser patients cannot sue for malpractice. You will be scolded by your friends and strangers for Kaiser's deficiencies.