Chefs wear checkered trousers to efficiently hide spills, dirt and stains that come from active kitchen duty. These stains are inevitable, especially in a busy restaurant kitchen, and the black-and-white houndstooth pattern on the checkered trousers create an illusion that helps hide the stains.
Chefs wear different types of trousers as part of their uniform, depending on the chef's needs and preferences. Chef's pants are usually unflattering because they tend to be loose to accommodate the large range of movement a chef needs inside a kitchen. However, as of 2014, chef's pants have been developed to become more fashionable but still allow active movement.