International Union of Operating Engineers Local 12

Ronald J. Sikorski was elected Business Manager of the International Union of Operating Engineers in June 2015 and appointed International Vice President. He is honored to serve the membership of Local Union No. 12.

In 1975, he graduated from the Operating Engineers Apprenticeship Program as an equipment operator. He served as a Job Steward on several jobs in the construction industry.

Ronald was hired as a Business Representative in 1980 and promoted to District Representative in 1996. He served as Vice President of the Riverside/San Bernardino Central Labor Council since 1980.

In 2008, he was appointed Vice President of Local Union No. 12.

He is currently Vice President of the State Building & Construction Trades Council and Vice President of the California Labor Federation AFL-CIO. He currently serves as a Trustee of the Southern California Partnership for Jobs.

Southern California District Council of Laborers

Jon is Business Manager of the Council. He began his career in the Labor Movement in 1986 and has worked for several unions, including the Cement Masons and Operating Engineers (Stationary) Local 501. He has been a compliance representative investigating unscrupulous contractors on public works, an organizer in both the private and public sector, a Field Representative and Chief Negotiator. To broaden his experience, Jon accepted a position in January 1995 with the AGC of California and served as the Director, Industrial Relations. He believes it gave him a unique glimpse into the daily challenges union contractors face from their non-union competition and sometimes from the trades to which they are signatory. In 1998, Jon left AGC to become Executive Director of Audit and Collections for the Construction Laborers Trust Funds for Southern California. In mid-2000, he began a new challenge by the Laborers International Union of North America (LiUNA!) and Laborers Local 1184. It was to represent the Hod Carriers (Plaster Tenders) in the (12) Southern California counties after LiUNA! consolidated all Plaster Tenders under Local 1184. Under his leadership, a new apprenticeship program experienced much success turning out qualified journeymen that replaced (and continue to replace) an aging plaster tender workforce while maintaining the highest retention rate of all the apprenticeship programs in the wall and ceiling industry.

On October 26, 2017, Jon was appointed Business Manager of the Southern California District Council of Laborers. Jon is Chairman/Co-Chairman of the Laborers Health & Welfare Trust, the Laborers Pension Trust, the Laborers Joint Apprenticeship Committee and Training Trust, the Laborers Vacation Trust, the Plaster Tenders Joint Apprenticeship Committee and Training Trust, the Center for Contract Compliance as-well-as several committees of all these Trusts.


Associated General Contractors of California

Jaimie Angus began working as a laborer for Griffith Company in 1987 while he was completing his degree in aerospace engineering at San Diego State. The second generation in his family to work in construction, Jaimie followed in the footsteps of his father, a former Griffith Company superintendent. During his rise from laborer to estimator to Los Angeles District Manager, Jaimie participated in a number of Griffith Company’s notable projects, including the $20- million Vista Village Redevelopment Project and the $71- million Pier T Project. In 2010 Jaimie was appointed Executive Vice-President and assumed day-to-day operations responsibilities. As President, Jaimie oversees operations throughout the Company including estimating, project management and field forces. Jaimie has been instrumental in developing our large job project management team skills while building high profile Port of Los Angeles projects like the $126 Cabrillo Way Marina and the $54- million Harry Bridges Buffer Projects. In 2006 and 2007, Jaimie served as Chair of the AGC of California’s Los Angeles District, including the coordination of the District Workforce Development efforts. While serving as a State Board Director in 2013 Jaimie chaired the Joint Engineering Division Board. In 2016 Jaimie served as AGC California President.


David Garbarino was elected Vice President on a white ballot in June 2015 and proudly holds that title today.

In March 1987, he joined the International Union of Operating Engineers, Local Union No. 12 and went to work for Reynolds Electric at the Nevada Test Site as a heavy-duty repairman. He was appointed as a Job Steward in 1988 and appointed to the District 6 Advisory Board where he served for seven years.

He was hired by Local Union No. 12 in 1997 as a Business Representative for Nevada and appointed District Representative in 2008.

He was appointed by the Governor to both the Clean Water Coalition Community Advisory Board and the Nevada State Employment Security Council. He served as President of the Southern Nevada Central Labor Council, Vice President on the Nevada State AFL-CIO Executive Board, Vice President of the Southern Nevada Building and Construction Trades Council and Chairman of the Southern Nevada Operating Engineers Joint Apprenticeship Training Trust until his appointment to Local Union No. 12 Treasurer in February 2013.

Associated General Contractors — San Diego
Building Industry Association of Southern California

Bryan Zatica is President and CEO of the Macro-Z Technology Company (MZT). Since founding MZT in 1989, he has built a financially sound, multidiscipline heavy construction company specializing in facilities and civil construction. He began his career over 33 years ago as a cost engineer on large-scale public-works, then progressed through the ranks of field engineering, project management, and estimating. MZT provides construction services throughout the West Coast for a variety of owners including the Veterans Administration, U.S. Army Corps of Engineers, U.S. Navy, Department of Homeland Security, Bureau of Reclamation, U.S. Air Force, U.S. Department of Transportation, General Services Administration, Federal Prisons, National Park Service, USDA Forest Service, NASA, State, County and local cities. MZT has been awarded hundreds of projects which include wastewater treatment plants, pipeline construction, water course channel work, command headquarters and support facilities, fire stations, multi-story building construction, multifamily housing, commercial high-rise construction, hospital renovations and repairs, environmental restoration, MetroRail station construction, new freeway and bridge construction, seismic repair and strengthening of existing infrastructure. Mr. Zatica has received many prestigious awards, including Civil Works Contractor of the Year by the U.S. Army Corps of Engineers, South Pacific Division, SBA Minority Small Business Person of the Year, SBA Small Business Entrepreneur of the Year and has been inducted into the Society of American Military Engineers Academy of Fellows.

Engineering Contractors Association

Now serving as manager and partner at Mike Bubalo Construction Co., Inc., David joined the company in 2000. Currently he oversees estimating, engineering, and operations activities for large-scale underground utility development projects in five Southern California counties. Formerly, David served as project manager at Steve Bubalo Construction Co., Inc., responsible for estimating sewer, storm drain and waterline projects. He began his professional career at the Los Angeles County Department of Public Works, where he held civil engineering positions of increasing responsibility, culminating in the post of Section Head, Design Division, Contracting Section. David is a member in the American Society of Civil Engineers (ASCE) and ASCE’s Construction Institute. He serves on the board of directors of the Engineering Contractors Association (ECA), and the Construction Industry Coalition on Water Quality (CICWQ). His group technical committee efforts involve developing specification standards for public works projects. David holds a B.S. degree in civil engineering from North Dakota State University in Fargo. He has completed graduate courses at USC in advanced steel and concrete design, and at California State University, Los Angeles in engineering applications of computers and advanced structural analysis.

Southern California Contractors Association

Matt Pim is President and CEO of Riverside Construction Company, a full-service general engineering contractor specializing in heavy / civil construction in Southern California. For over 48 years, Riverside has built projects for both the public and private sectors of the construction industry primarily within the Inland Empire, Coachella Valley, Victorville, and Temecula Valley areas. Projects include roadways / freeways, street improvements, site work development, bridges, retaining walls, dams, flood control channels, storm drains, underground utilities, and parks. Riverside Construction is a highly respected company with a solid reputation for quality work and is proud to be an employee-owned company. All the employees have a stake in the success of the firm and are committed to quality work and service. Matt started with the firm working summers while in high school and started full time in 1982. He rose through the ranks starting as a laborer, then working with the carpenters, and operating heavy equipment. Matt became a superintendent and was responsible for running multimillion dollar jobs in the 1990s. He was made operations manager and vice president in 1997. As the company became 100% employee owned in 2002, Matt was elected President, CEO, and Trustee. In the years following 2007 saw Matt lead an effort to diversify into underground utilities, HVAC, and property development, in the way of high-end single family home lots. Matt is a member of: The Beavers; Southern California Contractors Association (SCCA) [Board Seat, 2014 President]; Trustee CIAF, FCIA; Southern California Partnership for Jobs (SCPJ) [Board Seat]; Construction Industry Advancement Fund; The Community Foundation of Riverside and San Bernardino Co. [Board Seat]; Community Bank [Advisory Board]; Security Bank [Community Board]; and the Orange County Wheelmen.