https://www.quora.com/Can-a-sitting-Supreme-Court-Justice-be-charged-with-a-crime
"... If any judge—including a Supreme Court justice—got caught shoplifting or buying illicit drugs outside work, he or she would be arrested and charged with a crime just like anyone else. The rationale for a sitting president to be beyond indictment is that the executive is a single, indispensable individual in making our government function, and the costs to the nation caused by such a distraction would be immense. In contrast, the Supreme Court (and any other courts) can still operate minus one member."
https://www.quora.com/Can-a-US-Congressman-be-indicted-for-a-crime-while-in-office
"Members of the House and the Senate
".. shall in all Cases, except Treason, Felony and Breach of the Peace, be privileged from Arrest during their Attendance at the Session of their respective Houses, and in going to and returning from the same; and for any Speech or Debate in either House, they shall not be questioned in any other Place.""
"So they have some protections, but unlike a sitting president (who cannot be charged while in office according to numerous Constitutional scholars and successive Justice Departments) Congressmen can be charged."
If you want look at it here is the OPM manual on furoughs, but its directed primarily at issues of holidays, leave, and pay.
Examples of Congress being charged while in office:
https://www.nytimes.com/2018/08/08/nyregion/chris-collins-insider-trading.html
Politicians convicted while in Federal office:
https://en.wikipedia.org/wiki/List_of_American_federal_politicians_convicted_of_crimes