After being injured at work, you have the right to seek benefits from your employer's workers' compensation insurance. While workers' comp may not pay the full amount you were making before, it should cover a portion of your weekly pay, and you may be able to seek higher compensation through a settlement.
While you do have some rights after being injured at work, there is no obligation on any employer to pay a staff member their full standard salary if they are off work due to illness or injury – even if it was caused by an accident at work, or materials used at work.