What exactly do you mean by one job?
One profession.
One employer.
Or one tightly defined, specific set of tasks.
Maybe, in terms of profession and possibly employer, then the traditionals of academia, medicine, the law, the church, and the military all fit the concept of 'one job for life'.
Outside of government and large institutions then the concept of a single employer for life seems to be a concept from times past - even if you don't intentionally change employer then privatisation, takeovers, company splits and rebranding does the task for you.
But job in terms of a specific set of tasks it seems unlikely that you wouldn't at least be on some sort of progression, journey, development of some sort - whether that's as in retail, vehicle maintenance, agriculture or even fine art you'll generally be learning and changing within a changing environment.
And ultimately, even if you could get 'one job for life', would you want it? With increasing healthy lifespan and later retirement age then a working life could be 50 years.