If you're still marketing your factory as OHSAS 18001 certified in 2026, you're presenting invalid credentials to buyers. This isn't a minor technicality—it's a compliance issue that can disqualify you from serious B2B contracts on Alibaba.com and other international platforms.
Here's what happened: OHSAS 18001 was officially withdrawn in March 2021 after a three-year transition period. The standard was replaced by ISO 45001:2018, which introduced significant improvements in structure, risk-based thinking, and worker participation requirements [1]. Any OHSAS 18001 certificate issued after the transition deadline is invalid and should not be used in buyer communications.
The transition wasn't just a name change. ISO 45001 introduced the High-Level Structure (HLS) that aligns it with ISO 9001 (quality management) and ISO 14001 (environmental management), making integrated management systems easier to implement. More importantly, ISO 45001 requires top management leadership commitment and worker participation—elements that were weaker in OHSAS 18001 [2].
OHSAS 18001 vs ISO 45001: Key Differences
| Feature | OHSAS 18001 (Withdrawn) | ISO 45001 (Current) |
|---|---|---|
| Status | Withdrawn March 2021 - Invalid | Active international standard |
| Structure | OHSAS-specific framework | High-Level Structure (HLS) aligned with ISO 9001/14001 |
| Leadership | Management representative role | Top management accountability required |
| Worker Participation | Consultation requirements | Active worker participation mandatory |
| Risk Approach | Hazard identification | Risk-based thinking throughout |
| Context | Limited organizational context | Internal/external issues consideration |
| Validity for Buyers | Not acceptable for new contracts | Required for serious B2B buyers |
For apparel and textile manufacturers selling on Alibaba.com, this transition has real business implications. International buyers—especially from the EU and North America—increasingly require ISO 45001 certification as part of their supplier qualification process. Presenting an obsolete OHSAS 18001 certificate signals outdated compliance practices and can damage your credibility.

