Public Service Freedom to Negotiate Act of 2018 This bill requires the Federal Labor Relations Authority (FLRA) to make a determination as to whether a state substantially provides for certain rights and responsibilities applicable to public employees, such as granting such employees the right to form or join a labor organization and to bargain collectively, and if the state does not substantially provide for such rights and responsibilities, then such state shall be subject to nationwide standards prescribed by the FLRA to protect public employee rights. No employer, emergency services employee, or law enforcement officer may engage in a lockout, strike, or any other organized job action of which a reasonably probable result is a measurable disruption of the delivery of emergency or public safety services. No labor organization may violate or attempt to violate this prohibition.