There are some who start their retirement long before they stop working.

Half’s remark plays on “retirement” as a mindset rather than a date on the calendar. It suggests that some people disengage—reducing effort, curiosity, and responsibility—while still formally employed. The line functions as a critique of complacency and a warning about the slow erosion of professional purpose: one can be physically present at work yet psychologically “checked out.” In a broader sense, it also comments on motivation and identity, implying that meaningful work depends on continued investment and growth, not merely time served. The quote is often used in management and career-advice contexts to encourage engagement and accountability.