A few summers ago I worked as a summer intern for my local city along with another coworker. We were each tasked the same job and were expected to complete the same amount of work. The job consisted of taking a list of properties around the city and surveying their plot of land to see if they were suitable, under city standards, to have some tree planted in their property by the city. We were also inspecting if the tress which had been planted the previous year had survived the winter or not. We were each given a book of which had sections of the city mapped off and let you know exactly where the tree had been planted. We were also given the list of the locations we were supposed to visit and finally a city car that got us there.
The first day, we each surveyed about the same amount of properties at about the same amount of time. Where the opportunism started to take place was once I discovered that the method they told us to use to locate these properties was, to say the least, very inefficient. They had the properties in alphabetical order instead of grouping them by locations that were near one another. Basically, had I not discovered this, I would have been going back and forth to opposite ends of the city time after time instead of clearing sections at a time. The obvious faster method. I ended up taking the list and categorizing the locations by section so that way I could finish all the locations that were in one area of the city without having to come back to it. I also edited the excel list so I can travel to neighboring sections in order. This method cut my time by a factor of 3. To add to this, once I had organized the list, I stopped using the map of sections that they had given us and just started using my phone's GPS. Since I knew where the general section was once I used the GPS, near locations were easy to remember without the need of the book which was very confusing.
Ideally a "good citizen" would share this information with his coworker but for me, it did not even cross my mind. At first using this newly self discovered information made me look like an all-star compared to my not-so-fast coworker. Once I found out that there was no benefit in finishing early and that there would be no further work if I completed the list for the summer, I ended up taking advantage of the situation even further. I would finish my day's in a few hours or so and go home to take a nap and eat. At the end of the day, I would still come back with more locations surveyed than my coworker and in the eyes of my boss I was an ideal intern. I could only imagine what he would've thought had I not been so opportunistic.
At the end of the day, I chose not to be a "good citizen" because in this specific case it would have worked against me. I would've completed all my tasks much earlier than expected and would have been out of a job early in the summer. I was in need of saving money for the upcoming school year and simply took advantage of the situation that was presented to me.