I know the book says that generally it’s long term if going concern and short if terminating plan.
I’ve seen in past exams that when the ratio of retired to active lives has increased, we say that the time horizon has decreased.
Based on this, if originally presented with a plan with a high ratio of retired to active lives, would you say the time horizon is long, short, or something like “Similar to most pension plans, this plan has a long time horizon because it is a going concern; however, the high ratio of retired to active lives is high and liquidity needed to fund retirees reduces the duration of the plan’s liabilities and decreases its time horizon.”