The Texans posted a video of the special gesture Wednesday on Twitter.
'I'm excited to do a little a surprise to the cafeteria ladies that have been helpful for all of us so it should be cool," Watson said in the video, as he walked beneath the Texans' home stadium.
He walked into the cafeteria and handed three women three separate envelopes.
"For what you all do for us everyday and never complain," Watson said. "I really appreciate you all so I wanted to give my first game check to you all to help you out in some type of way."
Each woman gave Watson a hug and thanked him for his contribution.
"Thank you guys," Watson said. "I appreciate you all. Hopefully that's good to help you get back on your feet and anything else you all need, I'm always here to help."
The Texans' video has been retweeted more than 4,000 times and has more than 10,000 total interactions.
Watson, 22, got his first start on Sept. 14 in a 13-9 win against the Cincinnati Bengals. So far this season he has completed 61.3 percent of his passes for 528 yards, three touchdowns and three interceptions. He also has 124 yards and a score on 15 rushing attempts. The former Clemson star signed a four-year, $13.8 million contract with the Texans in May.