or even a solid T-shirt—depends on your workplace vibe and personal style. That said, a blazer is practically nonnegotiable for business casual unless your office leans very casual or creative.

A lot of that is because the blazer has long since returned to its most versatile self. As ever, you can wear one with a dress shirt and tie, but the casual route is just as appealing. T-shirt and ...

Business casual isn’t the time for graphic T-shirts or visible branding. Save the oversized Champion symbol for later. DON'T athleisure. While some might lobby for joggers paired with a blazer ...