I worked for one employer in 2025 and received 3 pages W2s for TOTAL State, State #1, State #2, and State #3. I have two W2s for State #1 and two W2s for State #2 with different amounts in each for boxes 12a (D for 401k retirement plan), 16 (state wages), and 17 (state income tax). For example, for State #1 my 12a is different on both versions of the State #1 W2. When I add the amounts in each state W2 box 12a (I'm only contributing to one retirement plan), the total is about $1300 off from the 12a amount for TOTAL STATE. Boxes 1-11 are the same on all forms, with the exception of the "Employer use only."
Is this an error by my employer? Should I report every box 12a, 16, and 17 even if there are duplicates from the same states?