Public employers shall have, in addition to all powers, duties, and rights established by constitutional provision, statute, ordinance, charter, or special act, the exclusive power, duty, and the right to:
1. Direct the work of its public employees.
2. Hire, evaluate, promote, demote, transfer, assign, and retain public employees in positions within the public agency.
3. Suspend or discharge public employees for proper cause.
4. Maintain the efficiency of governmental operations.
5. Relieve public employees from duties because of lack of work or for other legitimate reasons.
6. Determine and implement methods, means, assignments, and personnel by which the public employer’s operations are to be conducted.
7. Take such actions as may be necessary to carry out the mission of the public employer.
8. Initiate, prepare, certify, and administer its budget.
9. Exercise all powers and duties granted to the public employer by law.