You shouldn't let yourself be taken advantage of by coworkers.
Roxanne's teammates want to go out to happy hour and asked Roxanne if she can finish up their work for the day.
Roxanne wants to make sure all the work gets done by the deadline.
Roxanne tells her coworkers that if she does all the work, her coworkers won't know what's going on and won't be prepared to present their project.
Roxanne agrees to take over her coworkers' work for the rest of the day.
Her coworkers understand her point and stay to help finish up the work.
Roxanne's coworkers go to the bar, but they get equal credit and bonuses after they present their project.