This is from an AP story about the partial government shutdown.

WHAT ABOUT TRAFFIC CONTROLLERS?

About 1,900 air traffic controllers — nearly one in every five — are eligible to retire right now.

“I don’t know how long they’re going to stay on the job if they are not getting a paycheck,” said Paul Rinaldi, president of the National Air Traffic Controllers Association.

There is an even larger group of recently hired trainees and apprentices, and Rinaldi said a long shutdown could cause some of them to take other jobs.

Emphasis mine.  I am sure Mr. Rinaldi represents the interests of the air traffic controllers getting paid.  Only speculation from him.  No counterquotes from anyone else.