Federal workers fret over their finances as government shutdown drags on. "No pay has me anxious."

Federal workers who are either furloughed or required to keep working without pay during the ongoing U.S. government shutdown express concern about the impact on their finances, their colleagues and the American public.

Roughly 750,000 of the more than 2 million federal workers are furloughed during the government closure, which began on Oct. 1, when Congress failed to agree on a spending bill, leading to the first lapse in funding in nearly seven years.

Here is what three federal workers — who shared their personal views with CBS News and were not speaking on behalf of their respective agencies — describe as their biggest concerns as the shutdown continues.

"No pay has me anxious"

James Kirwan, an attorney with the National Labor Relations Board (NLRB) and the legislative aff