David Fabila knows what it means to be busy. He’s a father of three with another one on the way, dedicated husband and hard-working employee. So when he showed up to work at the House of Oliver wine bar in Roseville, California, and noticed it was packed to the brim with customers, he shook off his sleepiness and got right to it.

There was no time to feel tired when he needed to make money to support his growing family.

But David never could’ve guessed that his impressive work ethic would lead to the surprise of a lifetime from an extremely generous customer…

David told CBS Sacramento that he was exhausted from his first job by the time he got to House of Oliver and had little energy for the busy night ahead.

“I was telling my coworkers that tonight is not my night I’m not having a good night, I just came from my other job, I’m exhausted.”

Despite his exhaustion, David sucked it up and got to work. He visited each of the tables to which he was assigned, serving one group of customers before quickly moving onto the next. He didn’t have much time to really impress his patrons due to the sheer number of people piling through the door – but David did his best.

His family’s well-being depended on how well he could attend to the tables in his section!

The night was flying by when a small crew of young people sat down on the patio and began ordering items off the menu left and right. By the end of their outing, the group spent upwards of $190. David politely handed over their bill, thanked them for their business and walked away.

But David noticed something odd when he returned to collect the check.

“I pulled the check out to close it and when I pulled it out that’s when I saw everything, their bill was very expensive it was like $190-something, that’s exactly the tip they left me… Unless you work in the service industry, you don’t really understand how much tips mean to a server, to a bartender.”

They had tipped him an additional $190 on top of their $190 bill. The young man responsible for the big tip, Steffen Berr, told CBS that he was excited to make a difference.

“I’ve been in his shoes before too, I used I work as a waiter in a diner in Texas, so I decided to show him what he did is appreciated… I’m in a position where I have the resources and luck to do this so why not just go for it, I’m really glad I did it he really needed that money more than I did.”

Apparently, the “Tip the Bill Challenge,” an Internet phenomenon where diners tip 100 percent of their bill, inspired Steffen to pay it forward. Why not make someone’s day if you have the means to do so?

Learn more about this heartwarming act of kindness for yourself below.