Discretionary deductions of the employee, including those for coverage under a state health benefits plan in which an employee is enrolled, shall be deducted from the disability benefits under this article unless canceled by the employee. If an employee deduction under a state health benefits plan is continued, the state employer contribution shall also continue.

An employee shall not receive service credit under the Public Employees’ Retirement System or the State Teachers’ Retirement System during the period of receipt of disability benefits under this article and contributions to the Public Employees’ Retirement System or the State Teachers’ Retirement System shall not be deducted. State employer contribution shall also not be made to either system during that period.

An employee shall not accrue sick leave or vacation credit or service credit for any other purpose during the period of receipt of disability benefits under this article.