Calorie counts are often not there, the food are cooked composites where you don't know how much oil has been used for example. Even if the counts were there,

Calorie counts are often not there, the food are cooked composites where you don't know how much oil has been used for example. Even if the counts were there, you have to bring a scale and hold up the line for everyone else for each item you dump on your plate. You'll piss off coworkers. You also get gravity effects where if your scoop near the bottom of the serving dish, you get extra helpings of oil, adding hundreds of calories.