I am scheduled to have my gullbladder removed and my supervisor informed me that she will not allow me to take the time off. I have the vac. time.

If your employer is covered by the Family Medical Leave Act, and if you are an eligible employee under the Family Medical Leave Act, then your employer is required to allow you to take time off from work in order to address your serious medical condition, for up to 12 weeks (presuming you have not taken FMLA leave previously in the last 12 months).  While the law does not require that this time off be paid, an employer can require an employee to exhaust accrued vacation and sick time during FMLA leave in order to continue to be paid.  If you would like to speak in more detail about your situation, please feel free to contact me directly.  Michael J. Davey, Esq. Eckell Sparks Law Firm mdavey@eckellsparks.com