Altruistic acts may have a place at a union shop in a home country, while working under a collective agreement.
However... The ME is based on individual contracts. Every expat here made a choice and weighed the risks. They signed their own contract based on their own circumstances.
What business is it of mine (or yours) to assess the finances of a co-worker in their 60's? Who am I to say they have "enough"? Who are you to say?
They (like you) were hired to complete a job. Move the aircraft safely and efficiently from point A to B. Their finances are their business and none of yours.