retired

eläkkeellä oleva secluded Secluded from society (of a lifestyle, activity etc.); private, quiet. (defdate)
Of a place: far from civilisation, not able to be easily seen or accessed; secluded. (defdate)
1910, (w), "The Saint and the Goblin", Reginald in Russia:

The little stone Saint occupied a retired niche in a side aisle of the old cathedral.

The retired workers are a major expense due to their pensions.