@Ned Devine wrote:
The jobs were with the same S & P 500 company
The IRS might be correct, and the employer might have messed up.
Look at "common paymaster" and "successor employer" in the links below.
https://www.irs.gov/publications/p15a#en_US_2022_publink1000169608
https://www.irs.gov/publications/p15#en_US_2023_publink1000202407
