Before you jump to laying worker you must first determine other things.
1. You say multiple eggs per cell. Where are they located in the cell at? This is important!
2. Do you have capped worker brood at all or is it all drone?
3. Have you seen the actual Queen of this hive?
The reasons for these questions will determine if you have a laying worker problem and course of action.
A1. If the eggs are not located on the sides of the cell wall, but instead in the center bottom of the cell, it may just be that the queen is just getting started again. Sometimes after an extended period of being banked and caged, it takes up to 3 weeks for her to become "normal" again.
A2. Again, if there is any normal worker brood it means that the queen is laying, not a worker as workers only lay drone. Bullet shaped cappings once they are capped.
A3. If the queen is present, the chances of laying worker is somewhat less. Most of the time laying workers happen once a queen is killed.
If you find these answers then I can tell you two diff good methods to deal with the hive.