I worked in 1999 and this week belongs to 1999, not a 2000. It is a common sense.
What cbg is saying is that what counts is when the hours are paid not when they are worked. Similar to how you pay taxes based on wages when they are paid not earned. You can argue "common sense" until you are blue in the face but if that is the way the plan is written then that is how the plan is written.
Having said that, 152 hours (1072 - 920) is a lot of hours to be worked in one year and paid in the next. That would mean paying a full month in arrears, which is illegal in most states.
Regardless, the burden of proof is on you to show the hours you worked/paid in 1999 and merely looking at a calendar and counting weeks isn't good enough.