Certified quality and sustainability

GLS ensures, monitors and improves quality and sustainability with a Europe-wide quality and environmental management system.
The company is certified in accordance with DIN ISO 9001:2015 and 14001:2015 by DQS, one of the largest international issuers of management certification.
As such, GLS meets internationally recognised high standards.

EcoVadis silver Medal

GLS Group’s sustainability efforts rewarded with EcoVadis Silver Certificate in 2023.

The company’s environmental impact puts it in the top 7% of the postal, courier and multimodal freight transport activities industry.

Seal of approval for quality management

Our comprehensive quality assurance includes precisely defined work processes, quality guidelines with inspection routines and regular audits. Quality indicators are managed on an ongoing basis.

We guarantee, check and improve our quality with a Europe-wide quality management system and thus fulfil high, internationally recognised standards according to DIN ISO 9001:2015.

Download ISO certificate 9001

DEKRA ISO certification 14001:2015

Seal of approval for environmental management

We are operating in an environmentally friendly manner, putting sustainability projects into practice at all national subsidiaries. We have gained ISO 14001:2015 certification for our environmental management system in all European countries.

This globally valid and recognised standard is one of the most important environmental management benchmarks for manufacturing companies and service providers alike.

Download ISO certificates 14001: 2015

EN 16258 certification for CO2 per parcel calculation

Within GLS Climate Protect we calculate the emissions per parcel based on EN 16258 (standard for the calculation of greenhouse gas emissions in transport and logistics). The conformity with the standard was confirmed by DEKRA.

Download a ISO EN 16258: 2012 certificate

CDP – Carbon Disclosure Project

The Carbon Disclosure Project is a non-profit organisation that collects and publishes companies’ environmental data on the basis of standardised questionnaires.

GLS takes part in the annual survey together with its parent company, Royal Mail.