OPINION
Appellant, Lori Temple, brings this interlocutory appeal from the trial court’s grant of the appellee, City of Houston’s, plea to the jurisdiction. In one issue on appeal, Temple argues that the trial court erred in granting the City’s plea. We reverse and remand.
Background
Temple’s late husband was a police officer employed by the City. Her husband participated in the City’s life insurance plan and named Temple as his beneficiary. The plan provided minimum coverage in the amount of $15,000. The plan also allowed Temple’s husband to elect coverage of two, three, or four times the employee’s annual base salary, in exchange for higher premiums.
Before he died, Temple’s husband elected insurance coverage of three times his salary. Temple believed that she and her husband had complied with the requirements to obtain greater benefits and that *818 the City was deducting higher premiums from her husband’s paycheck.
After her husband’s death, the City refused to honor Temple’s husband’s election of greater benefits. Temple filed a $148,000 breach-of-contract suit against the City, and the City responded by filing a plea to the jurisdiction. Following a hearing, the trial court granted the City’s plea and dismissed Temple’s suit for want of jurisdiction. Temple appeals from this order.
Standard of Review
Subject-matter jurisdiction is essential for a court to have the authority to resolve a case.
Tex. Ass’n of Bus. v. Tex. Air Control Bd.,
Sovereign Immunity 1
Sovereign immunity protects the State, its agencies and officials, and political subdivisions of the State from suit arising from their performance of their governmental functions, unless immunity from suit has'been waived.
Fed. Sign v. Tex. Southern Univ.,
The sovereign immunity of the State inures to the benefit of a municipality insofar as the municipality engages in the exercise of governmental functions, except when that immunity has been waived.
City of Tyler v. Likes,
Conversely, a municipality has no “sovereign immunity” when it engages in the exercise of proprietary functions.
Id.
“A proprietary function is one a city performs, in its discretion, primarily for the benefit of those within the corporate limits of the city, rather than for the use by the general public.”
Truong,
Proprietary or Governmental Function
In our order dated September 19, 2005, we asked the parties to provide supplemental briefing regarding whether the City of Houston was performing a governmental or proprietary function and the effect on the City’s governmental immunity. 3 Both parties filed supplemental briefs. The City argues that the operation of a police department is a governmental function and that an essential part of operating the police department is paying the officers, including payroll deductions. 4 Therefore, by deducting appellant’s insurance premiums from his salary, the City was performing a governmental function.
To support its argument that providing insurance benefits to City police officers is a governmental function, the City cites generally to three cases.
See City of La-Porte v. Bayfield,
In her supplemental brief, Temple relies on two cases for the proposition that a municipality’s act of providing insurance benefits to its employees, pursuant to a contract between the municipality and a private insurance company, is a proprietary function.
See Gates v. City of Dallas,
In
Gates,
the Supreme Court of Texas discussed the differences between governmental and proprietary functions.
In
Bailey v. City of Austin,
the court of appeals analyzed whether the City of Austin’s act of providing a health plan to its employees constituted a governmental or proprietary function.
“The key difference between a proprietary and governmental function is that the city functions in its governmental capacity when it performs functions mandated by the state.”
Truong,
Providing insurance benefits to City police officers does not involve an act provided by the municipality as the agent of the State in furtherance of general law for the interest of the public at large.
See Gates,
We sustain Temple’s first issue.
Conclusion
We reverse the order of the trial court dismissing Temple’s claims against the City and remand the cause to the trial court.
Notes
. The terms sovereign immunity and governmental immunity are often used synonymously and interchangeably without distinction. However, the supreme court has noted that sovereign immunity refers to the State's immunity from suit and liability and protects the State and its divisions, while governmental immunity protects political subdivisions of the State, including counties, cities, and school districts.
Wichita Falls State Hosp. v. Taylor,
. Section 101.0215 provides a list of proprietary functions, including but not limited to:
(1) the operation and maintenance of a public utility;
(2) amusements owned and operated by the municipality; and
(3) any activity that is abnormally dangerous or ultrahazardous.
Tex. Civ. Prac. & Rem.Code Ann. § 101.0215(b)(1)-(3) (Vernon 2005).
. A brief may be amended or supplemented whenever justice requires, on whatever reasonable terms the court may prescribe. Tex. R.App. P. 38.7. Although the parties did not raise the issue of whether the City was performing a governmental or proprietary function with the trial court, we address the issue because it involves a potential error of jurisdiction.
See Supak v. Zboril,
.We acknowledge that providing police protection is a governmental function. See Tex. Civ. Prac. & Rem.Code Ann. § 101.0215(a)(1) (Vernon 2005). We observe, however, that although police protection is a governmental function, the act of providing insurance benefits to city police officers is a distinct and separate act from providing police protection.
.
Cf. Williams v. Houston Firemen's Relief and Retirement Fund,
