How do you approach a struggling workmate who is stealing from the company?

Polly & Grant 03/07/2018

We received a letter from a loyal listener who was a bit unsure how to approach a tricky situation.

Their workplace has been subject to theft, but not of other people's possessions, just workplace items like toilet paper, milk and supplies.

They believe the workmate is struggling - but it is still stealing... What should they do?