Save your receipts.

During my stint as the environmental supervisor, I inherited a seemingly insignificant piece of equipment that would eventually trigger a skirmish: the trailer park meter. It simply measured the water the company was extracting from the local trailer park so it could be billed accurately. Every week, like clockwork, I had an employee visit the site to check its function. It was usually nonfunctional. The typical cycle of events was the following:

• Emailed my colleague who owned the water program to inform him that the meter was not working.
• Suggested that maintenance should troubleshoot and fix it.
• His response? Usually no response. Sometimes I'll get a "Oh well, its not that important."

This went on for MONTHS. So, I ignored the meter and the situation. But I never deleted the emails.

Months passed, and the inevitable finally happened. The city regulators wanted data from the meter. Apparently, the data was overdue. Panic makes the ignorant do desperate things. Instead of owning his negligence, he decided to "throw me into the fire".

My inbox lit up with his panicked email. He aggressively demanded to know why I hadn't fixed the meter. But the true malice wasn't in the message; it was in the "CC" line. He had copied various EHS officials, and the ultimate trump card: our Vice President.

He was publicly throwing me under the bus to save his own skin. I saw red and all I could say “WTF, you absolute asshole.”

My response was to open my email archive and went to war. My corporate response was ice-cold and devastatingly simple. I replied all, professionally addressing his concern and attached a chronological zip file of over a year’s worth of emails regarding the broken meter. I included every ignored warning and every single response where he explicitly told me to "ignore it."

I felt glorious wave of warmth over me. It was a digital mic drop.

The fallout was instantaneous. The executive's attention shifted from me to utter silence because she was allergic to apologizing. In addition, the trailer park meter, which had sat broken for months, was fully functional within 24 hours.

This time, I did not let it end at a keyboard. I tracked down the POS colleague.

I looked him dead in the eye and delivered a very clear, very final message: "Do not ever try to pin your incompetence on me again."

The Lesson: Your Paper Trail is Your Body Armor

This entire debacle solidified the most important survival rule in the corporate world: If it is not documented, it does not exist. A wise man once told me that. Also, save your receipts - all of your receipts. You never know when you will need them and for who.