The term often implies receiving regular government funds upon retirement, known as a pension. He's a pensioner now; he gets his pension check every month.
Pro Tip 2/3
Age Implication
Pensioner suggests the person is likely elderly as most pensions activate at older age. City buses offer discounts for pensioners during off-peak hours.
Pro Tip 3/3
Work History
Implies the person has a history of long-term employment, commonly in one organization. As a pensioner, she often shares stories from her decades at the postal service.