Worker loses the company money: Can we ding the paycheck?

Q: “If an employee causes a monetary loss to the organization, can we deduct that loss from the employee’s paycheck? All our employees agree in writing that they will adhere to our Personnel Policy Manual, which states: 'Loss of Revenue: If any staff member, whether full-time, part-time, temporary or seasonal, causes a loss of revenue because of negligence, it will be at the discretion of the Executive Office, based on the severity of the negligence, to determine the consequences of the infraction(s). The consequences include but are not limited to: written warning, probation, loss of one day vacation or paid holiday, the staff member being held liable to compensate the employer for one half the monthly cost, or the full cost of his/her health care. A consequence of negligence may also be dismissal.'” – Mendel, New York