My Lords, universal credit works on fixed assessment periods. But if, like NHS workers, you get paid at the end of the month, you can find two pay days falling in one universal credit period. The system then assumes that you have had a 100% pay rise and slashes your benefit, or even stops it altogether, thinking that you are now too rich to need it. We have raised this with Ministers repeatedly, but to no avail. It should not take four single mums going all the way to the Court of Appeal to have this obviously daft policy declared irrational. How will the Government find and compensate all those who have lost out? When will the system be changed to stop this happening in future?