TSA agents are losing their checkpoint chairs in a controversial new move

The next time airport travelers hand over their ID at a security checkpoint, the Transportation Security Administration (TSA) officer they encounter may be standing instead of sitting.

The union representing workers, however, argues it could negatively affect both safety and comfort.

"This welcome change reinforces both our security posture and our commitment to hospitality by having these officers on their feet and alert," the agency said in a statement to multiple news outlets.

The move comes nearly two months after TSA Administrator David Cummins took the helm of the agency and launched an initiative to improve the passenger experience.

"The hard floors they are standing on do not offer any support, which can cause foot and back issues," said Daniel Bubb, Ph.D., a commercial aviation professor at the University of Nevada, Las Vegas.

Bubb, who was previously an airline customer service representative and performed airport security duties, said providing anti-fatigue mats for officers on their feet could help reduce strain from standing on hard airport floors.

"As a passenger, I don't care whether the person checking my ID is sitting," Leff said. "They should be paying attention, treating passengers with respect and moving the line efficiently."

He added, "I'm not sure a stool is a problem."

Fox News Digital reached out to the TSA for additional comment.