CALIFORNIA WATER SERVICE GROUP

We believe that our employees are our greatest asset and are critical to our continued success. We place a strong emphasis on attracting and retaining talented and experienced individuals to manage and support our operations. To support these efforts, we offer our employees a broad range of Company-paid benefits, and we believe our compensation package and benefits are competitive with others in our industry. Additional information about our employee benefit plans is included in Note 11 of the Notes to Consolidated Financial Statements.

We have an unwavering focus on hiring, developing, and supporting an inclusive, diverse and equal opportunity workforce. It’s essential that each employee actively fosters an environment where everyone feels valued and respected. Our employees are expected to exhibit and promote honest, ethical, and respectful conduct. This is not just a guideline but a fundamental value of our Company culture. All of our employees must adhere to a business code of conduct that sets standards for appropriate behavior and ethics and includes required internal training on preventing, identifying, reporting, and stopping any type of unlawful discrimination.

Employee health and safety in the workplace is another one of the Company’s core values that we seek to live by every day. Safety efforts are led by the Executive Safety Committee and supported by safety committees that operate at the local level. These teams work tirelessly to help our work environment remain safe and healthy for everyone. Our practice is to actively identify hazards in the workplace so that management can track incidents and take remedial actions to improve workplace safety.

As evidenced by our internally created Future Leaders of Water Development Program, our management team is dedicated to fostering a culture of developing future leaders from our existing workforce, enabling us to promote from within for many leadership positions. We firmly believe this provides long-term focus and continuity to our operations while also providing opportunities for the growth and advancement of our employees. Our focus on retention is clearly reflected in the length of service of our management team, with an average tenure exceeding 15 years.

Employee levels are managed to align with the pace of business and management believes it has sufficient human capital to operate its business successfully. Management believes that the Company’s employee relations are strong, as evidenced by the Company being recognized by several organizations as a top workplace. At December 31, 2025, we had 1,336 employees, including 1,182 at Cal Water, 84 at Washington Water, 48 at Hawaii Water, 22 at New Mexico Water, and no employees at Texas Water. In California, the Utility Workers Union of America (UWUA), AFL-CIO represents our non-exempt field, customer service, and non-confidential clerical employees and the International Federation of Professional and Technical Engineers (IFPTE), AFL-CIO represents our professional and technical engineering and water quality laboratory employees.

As of December 31, 2025, we had 696 employees represented by the UWUA and 109 employees represented by the IFPTE. In 2021, we reached separate six-year agreements with both unions on new contracts that run from May 14, 2021 (UWUA) and October 4, 2021 (IFPTE) through February 28, 2027. The parties worked hard in reaching these agreements that we believe provides our employees with a market competitive pay and benefits package.

Employees at Washington Water, Hawaii Water, and New Mexico Water are not represented by a labor union.