İstanbul municipal subsidiaries sign collective agreements with energy and service unions

What happened

İstanbul Metropolitan Municipality subsidiaries have entered into collective labour agreements with unions representing workers in energy, municipal and waste-management operations. The signing ceremony was held at an İSKİ meeting venue in Eyüpsultan, according to Enerji Günlüğü.

İGDAŞ, the city’s gas distribution business, signed with Türkiye Enerji, Su ve Gaz İşçileri Sendikası (TES-İŞ). İstanbul Enerji signed an agreement with Petrol-İş. Separately, municipal environmental and waste company İSTAÇ concluded an agreement with Hizmet-İş, which is affiliated with the HAK-İŞ confederation.

The announcement confirms the union arrangements affecting these subsidiaries, but does not provide the agreements’ start or end dates, financial terms, or other detailed conditions. Organisations assessing workforce or operating implications will therefore need to await any further disclosure of the terms.

Why it matters

The agreements cover businesses responsible for services closely linked to İstanbul’s energy and environmental infrastructure. İGDAŞ delivers natural-gas distribution across the city’s 39 districts. İstanbul Enerji works in renewable power, energy management, fuel provision, public lighting, energy-efficiency services and electric-vehicle charging.

İSTAÇ’s operations are also material to the city’s waste system: it transports and disposes of a large share of household waste. The collective agreements establish the labour-relations framework for workers at these entities, although the source does not disclose how the agreements may affect staffing, pay or service delivery.

Operational context

İstanbul Enerji’s largest facility is the Seymen Energy Generation Facility in Silivri, which generates electricity from landfill gas and has 44 MW of installed capacity. The company also operates roughly 9.4 MW of solar installations across İstanbul.

İSTAÇ has more than 4,500 employees and operates over 60 facilities. It handles an average of 17,000 to 18,000 tonnes of municipal household waste each day, according to the report.

What comes next

The municipality says it intends to sign 22 collective agreements during 2026. These are to involve six unions from three confederations and span four business lines. No timetable was given for implementing the newly announced agreements.