Comment Sounds like you have the answer in the offer... (Score 2, Informative) 443
Yes, it is common practice in large companies.
However, you are in luck!
It sounds, from your description of the offer, that they included details of the relocation package in the offer. Which means you have it in writing. Which means it is a contract. Which means that you should tell the HR person that you have already accepted the job, which means that you have accepted the terms of the contract the offered.
You have the option of telling them that they will honor the terms of the contract, or you will sue them for the difference plus attorney's fees. Also add that you have every intention of honoring your part of the contract by continuing to work there, and if they try to fire you for filing suit, you will sue them again for wrongful termination, damages, and attorney's fees. Make sure the Recruiter and your new boss know of your intentions to hold them to the contract by legal force if necessary.
It is that straight forward. Good Luck.
However, you are in luck!
It sounds, from your description of the offer, that they included details of the relocation package in the offer. Which means you have it in writing. Which means it is a contract. Which means that you should tell the HR person that you have already accepted the job, which means that you have accepted the terms of the contract the offered.
You have the option of telling them that they will honor the terms of the contract, or you will sue them for the difference plus attorney's fees. Also add that you have every intention of honoring your part of the contract by continuing to work there, and if they try to fire you for filing suit, you will sue them again for wrongful termination, damages, and attorney's fees. Make sure the Recruiter and your new boss know of your intentions to hold them to the contract by legal force if necessary.
It is that straight forward. Good Luck.