There is money to made in BART's garbage.

The Mercury News reports that three BART janitors racked up over one hundred thousand dollars each in overtime pay. Liang Zhao Zhang made $125,573 in overtime pay, Gapo Chan made an extra $125,254, and Yui Fai Ko took in $115,007 for overtime work. That's a combined a combined 7,900 hours of overtime.

Earlier this year, KTVU's investigative unit focused on the notoriously well-compensated Zhang. Secretly following his moves with a camera, the team found that Zhang spent hours at a time sitting in a storage closet.

Interested parties can apply for a BART job here.

"We turned off all overtime for janitors at the beginning of this year," BART spokeswoman Alicia Trost told the Merc. And they're not hiring more janitors anytime soon (a.k.a.: until we stop obsessing about how much they're paid.)

A post shared by Todd Larson (@tlarson18) on Apr 23, 2017 at 8:06pm PDT

According to Trost, the Bay Area's homeless epidemic has burdened BART's custodial workers with additional challenges. "These workers clean up urine, feces and needles and we are thankful for their hard work and that they take the shifts to help tackle the cleanliness problem. The job isn't for everyone."

We all know how gross BART stations can get. SFist has delved into the dirt here and here. It's certainly no secret that BART escalators are made from metal and poop.

Of BART's 134 janitors, only the aforementioned three made over $100K in overtime last year.

"As is the case here. Overtime is provided based on collective bargaining agreements and others are saying 'no' to these shifts while some take them. When salary data for 2017 is released next year, there will be a drop in overtime pay for janitors," Trost promised the San Francisco Business Times.

Related: Some BART Employees Making Triple Their Salaries In Overtime

It seems that over 1,000 custodial artists have gone on strike as of this morning at some of Silicon Valley's most prestigious hi-tech companies, including Cisco Systems and Apple, livid over a new contract. Accordng to the Mercury News:

Garcia said the proposal did not "do enough" to correct a system that makes workers wait 2 1/2 years to become eligible for health care benefits. For new hires, the waiting period for health care would be three years, and there would be no dental package.

Mike Garcia, president of the janitors' union, the 28,000 members make an average of $23,000 per year, earning around $7 less than their San Francisco brethren. And new janitors, it seems, earn a pithy $7-8 an hour in the Bay Area. (Meanwhile, the head custodian at Cisco, Victor Gutierriez, 57, earns just $13 an hour. He has worked for the company for over 12 years. )

Garcia goes on to tell the Mercury News that "there are lots of sad stories of workers losing housing. They reflect the difficult times of the working poor in Silicon Valley."

Other labor unions might, we're told, honor the strike by walking off the job as well.