Can a employer be sued for denying a employee accomodations and fire them instead?

Retaliatory dismissal is usually grounds for a lawsuit. But as to the accommodations, that depends on what they were. Employers must accommodate for legally disabled persons and for the religious practices of workers. But there are also limits as to how and when companies have to do that for other purposes.

That depend son what the accommodation is and what the disability is, etc. Need way more detail.

You need to re-post and explain what 'accommodation" means.

Accomodations??? do you mean; office space or living space. Anyway you can't sue employer just look for another job. (Monster.com)

An employer can be sued, but the question is whether a person would win the case, or whether it could resolved with a government agency.

In the USA, handicaps are to be given reasonable accommodation, just as religious observance. Reasonable is what is decided in courts and negotiation based on what typical people decide.

It really depends on the situation. It could go either way in a court of law. If the accommodations were reasonable and the employee would be just as capable of doing the job as another, then it is unIawfuI to fire. It sounds like you may have a legitimate case, so I would contact an attorney.

accommodate what?   

In every employment situation, the employee’s talents or productivity (whether proven or merely perceived by management) must outweigh their liabilities (whether proven or merely perceived by management). working part time because that what you wanted wasn’t going to cut it for them