I am currently in a predicament with two companies, A and B. Both are in the US.
When I was originally offered a position with A, it was originally for a summer institute. I was under the impression the position would only be for the summer even though my start date and projects were changed later on. I made the mistake of not reading my job offer carefully and have recently found out that the position at company A is for an entire year period. The position for company A is also described as "casual employment".
This wouldn't be an issue except that I also signed for company B to start in September for a full-time position because I thought the company A position was a summer position. Both of the contracts were signed months ago with the position at company A offered verbally before company B, but the contract for company B signed before the contract for company A. This means my contract period for company A overlaps the period that I am supposed to be working for company B.
I'm not sure how to approach this situation since the people at company A are currently expecting that I stay for the year. I've also been considering staying for the year, but then that means going back on the contract with company B. Although both are at-will contracts, I'd like to fix this without burning any bridges if possible. Does anyone have any advice?