Where do you live? This is not the case for nearly all Americans, especially those that have had to switch jobs at ANY time since the 1970s. It is much harder today to get a job than it was back then, as back then, every company was looking for someone to work for them and all you had to do pretty much was walk in and get an interview. This interview would probably be the same day, and you would be almost guaranteed to be accepted, expensive college debt that keeps you from starting a family or no expensive college debt that keeps you from starting a family.
Now, my mother is constantly looking for a job since she is in her upper 50s and businesses don't want her, as they now view people as they do in our view of the world, which is, objects to be exploited, not humans to provide for and build up. She does have a job right now, but when she has any suspicion that she is not going to have one any time soon, she begins filling up all her time when she is home with searching for jobs and applying for literally every one that is in any way relevant to what she has been doing the past twenty years. Most of the time, despite all of this, she is still unemployed for up to ten weeks if it is unexpected. Since 2007, until earlier this year, she has not been in a job where she is a full time employee.