If life expectancy continues to rise as it has done, then children born between the cusp of the century and now can expect to become centenarians. The average age of death in advanced industrial countries will shift to 100. That is a nice round number, and that is based on current trajectories. That could go down, as it builds upon the thirty year rise in life expectancy during the twentieth century. Or it could go up, assisted by the progress of medical knowledge and technologies.
The linked article explores some of the potential alterations to life and work that will result from this change. Bring it on. For life has already undergone one of the greatest social shifts over the last fifty years: the emergence of equality between men and women. If we can deal with that, then the changes required to work and live for a full century should be just as invisible and just as dramatic.