New hypothesis

The student union is a popular place for students to meet and study as well as socialize. Inside of the union is an Alpine Bagel Café where many students go to grab a quick bite to eat between classes and to grab a snack before study sessions. Often I go to Alpine to get something to eat quickly. The workers are usually very efficient, and even when there is a long line, they can manage to serve the people at the end of the line in about ten minutes. When it is not overwhelmingly busy for them, the workers can be heard laughing and joking and even singing behind the counter.
Once when I went to get something to eat, the guy who was making my sandwich told me that I looked sad and needed to smile. Because I often see the people who work at Alpine laughing and joking around, even with their superiors, I am led to think that even though they are working they are determined to have a good time. I hypothesize that when it is busy they will be more serious about taking orders and making sandwiches, but when business is slower, they will goof off and joke around, while getting other necessary work done.
The reason I want to study the people who work at Alpine is because they seem to have fun in a situation that could potentially be stressful. If they are able to be relaxed in that sort of situation, then it could be beneficial. College campuses are notoriously stressful places, and if people have ways to deal with stress, it could be beneficial to the campus as a whole.