There aren't any clipless shoes that I would want to wear throughout my work day. Maybe you could get by if you're working a desk job, but definitely nothing that would do it if I was standing up all day.

Shimano makes a Click'r line of shoes and pedals designed to be easier to click in and out of -
SHIMANO CLICK'R - TECHNOLOGIES - CYCLING FOOTWEAR AND PEDALS - LIFESTYLE GEAR - SHIMANO

But again, nothing I would want to wear all day. When I biked to work with clipless I kept a change of shoes in a drawer at my desk.

Clipless is mainly about keeping your foot locked onto the pedal. It's highly debated whether it provides no additional efficiency, or only a small amount, but either way it's not worth it for efficiency reasons for a commuter as any time gained in pedalling is lost to changing shoes at each end.

You can get pedals that have pins for increased grip, a the pedal has a wider platform that work well. Here's a pair of Specialized Bennies:


Some companies make shoes specifically designed for biking with flat pedals. Chrome does. FiveTen does. Specialized makes a few shoes like that.

That would be the best bet for something you can walk around in all day.