"...but there is the pressure that I stay since it'll make the primary contractor look bad if I leave" You need to ask yourself: why is that my problem? Do yo

"...but there is the pressure that I stay since it'll make the primary contractor look bad if I leave" You need to ask yourself: why is that my problem? Do you want to work with this large company again? Do you want to work with the staffing agency again? If the answer to both of these is either "no", or "not really", or anything less than 100% "yes", then you have permission from this random hackernews to burn the bridges and just quit. (If you do want to stay, stop reading here). Your question doesn't mention any kind of employment contract and you are in the midwest which is pretty much full of at-will states, so...you can quit. You don't even need to give two weeks' notice if you expect the reaction to be hostile. Offer it as a professional courtesy but if they get nasty, pack your stuff and walk out the door. Don't say anything to anyone in either company, but start brushing up your resume and get out on the street and start looking. You know deep down that the May deadline will go screaming by like an F-16 on fire, so ignore that. Make a goal to get out of the job as soon as possible. Maybe look at it from a slightly different angle: after the project is done, will they ask you to stick around? You might be on the street anyway. Use the time while you are employed to find the next job. That's always the best position to be in.