Your subway hustle might merit a salary increase.

Researchers from the University of the West of England say Wi-Fi on public transportation means more people are answering work emails outside the office — to the point where their timecards deserve to be adjusted.

Researchers interviewed 5,000 rail commuters in London and found that 54 percent of those using the train’s newly available Wi-Fi are sending work emails, either to get a head start on the workday or wrap up unfinished business on the trek home. (That figure doesn’t include people who use their own data plans to send and receive messages.)

“It’s really important to my sanity that I can get work done on the train,” said one commuter in the study.

“It’s dead time in a way, so what it allows me to do is finish stuff and not work in the evenings,” another said.

Some proud workaholics said they actually like having the extra time to send emails.

“The majority of the time it’s an option for me to, you know, clear the decks for the day, relax and put work behind me more than anything else,” a passenger in the study said.

The growing availability of Wi-Fi on mass transit has intensified a “blurring of boundaries” between work and home life that raises questions of whether workers are being fairly compensated, study author Dr. Juliet Jain told the BBC.

“How do we count that time?” she said. “Do workplace cultures need to change?”