Your remedy is worker's compensation. Did you file a claim? Does your employer have worker's comp insurance? If YES, that is your exclusive claim against your employer. If NO, you can chose to either get comp benefits from the uninsured fund or sue your employer. If someone else owned the ladder you may be able to sue that person.
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With some exceptions, such as suing third-parties, the Workers Compensation Law precludes the employee from directly suing his employer.
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If there is no workers comp insurance, you should be able to get treble damages from your employer.
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While Worker's Compensation is a remedy, you may also have a third party claim depending upon the nature and location of the work that you were performing. You did not indicate what type of work that you do, but, for example, if you are a construction worker, you could have a viable case against the owner and general contractor of the job site for violating the New York State Labor Law. You typically can not sue your employer.
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