Yes, flannels are considered business casual attire in most industries and professions, despite the common association with lumberjacks or hipsters. Both men and women can wear flannels with khakis, dress pants, chinos, skirts, dresses, and sometimes even jeans. Appropriate footwear for a business casual outfit involving a flannel shirt includes dress shoes, casual brown or black shoes, athletic shoes in some circumstances, flats, and boots. To find out if flannels are considered business casual at your workplace, inquire with your company‘s human resources department or ask a veteran employee. However, industries such as finance, law, and certain corporations may not consider flannels as business casual attire.