Opcmia

What Opcmia does

Opcmia (Operative Plasterers and Cement Masons International Association) is a non-profit labor union founded in 1864 that represents plasterers and cement masons across the North American construction industry. Headquartered in Beltsville, Maryland, the organization operates with a workforce of 101-250 staff and functions as a collective bargaining agent for its trade members rather than a commercial enterprise.

The union's core activity centers on trade representation: negotiating collective bargaining agreements, maintaining jurisdictional work assignments, administering apprenticeship and journeyman training programs, and providing member services to certified cement masons and plasterers. Its operational scope spans the United States and Canada through affiliated local unions. The primary stakeholders are individual trade workers and signatory contractors who rely on the union for skilled labor referrals and labor relations stability.

As a 501-style non-profit trade association, Opcmia's revenue mechanics are driven by member dues, per-capita assessments from affiliated locals, and training program fees rather than product or service sales. No proprietary technology platform, AI capabilities, or distinct product lines were disclosed in the available source material; the opcmia.org website rendered only a CAPTCHA/verification page during data collection, limiting visibility into specific programs, financial disclosures, or recent operational initiatives.

Name

Opcmia

Website

https://opcmia.org

Company type

Private

Founded year

1864

Operating status

Operating

Headcount range

101–250 employees

Short description

Opcmia is a non-profit labor union founded in 1864 that represents plasterers and cement masons across the North American construction industry, providing collective bargaining, apprenticeship training, and member services to trade workers.

Ownership category

akta.pro rank

Product category

Labor Union Services

NAICS

Professional Organizations (81392), Employment Placement Agencies (561311)

SIC

Services-Employment Agencies (7361)

akta.pro primary industry

Public Works & Municipal Services Labor Staffing (BPACAEAM)

akta.pro secondary industries

Construction & Trades Licensure (Contractor, Electrician, Plumber, HVAC CE) (EDAAALAH), Concrete Masonry Units (CMU) & Segmental Concrete Products (IMADAAAC)

Keywords

• Labor union representation
• Construction trade union
• Plasterer cement mason union
• Construction worker advocacy
• Trade union membership

Headquarters

HQ city

Beltsville

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Others

Core offering

OPCMIA is a labor union that represents plasterers and cement masons in the North American construction industry. The organization provides collective bargaining representation, worker advocacy, training, and member services to construction trade workers specializing in plastering and cement masonry. Headquartered in Beltsville, Maryland, OPCMIA has served these specialized trades since 1864.

Differentiator

Problem solved

Functional benefit

Products and services

• Plasterers and Cement Masons Union Representation

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Expansion highlights1 record

Direct peers

• United Association of Plumbers, Pipefitters and Service Techs (UA): Union for plumbers, pipefitters, and HVAC service workers. Comparable to OPCMIA as a skilled-trades construction union running extensive apprenticeship/JATC programs across overlapping jurisdictions.
• International Brotherhood of Electrical Workers (IBEW): Largest electrical workers' union in North America. Comparable to OPCMIA as a premier construction trades union with extensive apprenticeship/JATC training and collective bargaining.
• International Union of Painters and Allied Trades (IUPAT): A U.S./Canadian labor union representing finishing-trade craftspeople in construction. Directly comparable to OPCMIA as a building trades union operating apprenticeship programs and collective bargaining in overlapping construction segments.
• Laborers' International Union of North America (LIUNA): Union representing construction laborers across North America. Comparable to OPCMIA as a peer construction trade union with overlapping job sites and overlapping apprenticeship/JATC training programs.
• United Brotherhood of Carpenters (UBC): Large North American union for carpenters and related trades in construction. Directly comparable to OPCMIA as a major building trades union operating apprenticeship training, collective bargaining, and jurisdiction over residential/commercial work.
• International Union of Bricklayers and Allied Craftworkers (BAC): North American union representing bricklayers, tile setters, and stone masons. Comparable to OPCMIA as a construction craft union whose members perform masonry-adjacent work and share apprenticeship/JATC infrastructure.
• International Association of Sheet Metal, Air, Rail and Transportation Workers (SMART): North American union covering sheet metal workers and related transportation crafts. Directly comparable as a building/construction trades union with apprenticeship and training infrastructure.
• International Association of Bridge, Structural, Ornamental and Reinforcing Iron Workers: Union representing ironworkers in construction. Comparable to OPCMIA as a building trades union with apprenticeship programs that often intersect on the same job sites.
• International Union of Operating Engineers (IUOE): Union for heavy-equipment operators in construction. Comparable to OPCMIA as a major North American construction trade union with parallel apprenticeship and collective bargaining operations.

Broad incumbents

• Associated Builders and Contractors (ABC): National construction industry trade association representing open-shop (non-union) contractors. Comparable to OPCMIA as a major North American construction industry institution engaged in workforce training, apprenticeship, and labor policy — albeit on the opposite side of the union/non-union divide.

Market position

Strengths3 records

Weaknesses4 records

Competitive moat3 records

Key risks4 records

Key highlights5 records

Customer concentration

• LinkedInlinkedin.com/company/opcmia

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Opcmia