Considering Congress can't even complete the mandated budget process by the end of September each year, absolutely nothing will get done.
While Congress is mandated to get paid, to encourage production they should only get paid quarterly based on making progress to complete the fiscal year responsibilities. That being said they should only get the same DC-rate per diem & housing allowances that Fed employees get when in town, until they (Congress) are on track, each quarter, to complete work by the end of the FY. So, they get 1/4 pay when meeting defined achievements each quarter x 4 of their pay only when that happens.
If they can't get the work done by the end of the FY, then each day over they lose a day of pay for the last 1/4.