Final answer:
Workers express self-interest by advocating for their own economic benefits, such as higher salaries and better working conditions, but also engage in non-self-interested activities like volunteering and donating to charities, showing a balance between self-interest and altruistic behavior.
Step-by-step explanation:
Workers typically express self-interest by seeking to improve their own economic position and well-being. When interacting in a professional context, they may express self-interest by advocating for higher wages, better working conditions, or opportunities for professional development. An example of self-interest in action is when a worker negotiates with their employer for a raise, exemplifying a direct way to pursue personal economic advantages.
However, self-interest behavior is balanced with altruistic activities that don't directly benefit one's immediate economic standing. For instance, individuals may volunteer their time, help others without material rewards, or donate to charities. These behaviors demonstrate that while self-interest is a starting point for many economic decisions, it does not encompass the entire scope of human actions in other areas of life.
In summary, while self-interest drives many economic actions, individuals also engage in numerous activities that are not driven by self-interest, indicating a multifaceted approach to personal and collective well-being.