I spent a lot of time working in the medical field and I can safely say, having a comfortable pair of shoes is a must.

Sanita® has been making comfortable clogs since 1907. They were the first to make what physicians, surgeons, dentists and veterinarians refer to - over 100 years later - as professional clogs or medical clogs.
Sanita clogs have been awarded the "Seal of Acceptance" by the APMA (American Podiatric Medical Association) for their supreme quality and comfort.

You can get these at Medelita.com