There is a time and a place for sandals, flip-flops, running shoes and scuffed shoes. A job interview - even an informal job interview is not one of the times for these kinds of shoes. An informal job interview means casual shoes; perhaps loafers, or oxford shoes for men. Perhaps pumps, flats, or boots for women for appropriate shoe choices. What should a man wear to an informal job interview? In some cases experts feel that jeans are appropriate is matched accordingly with a tucked in button-down shirt, and a jacket without a tie.