Giving up membership to proscribed gangs may not be enough to dodge the Queensland government's work registration legislation amendments.

Under changes passed late last year, members and associates of proscribed gangs may find their trading licence revoked or not renewed come July.

The Electrical Trades Union raised the issue earlier this month when its legal advice found that electricians, who were also members or associates of criminal bikie gangs identified by the government, were in danger of losing their electrical licence regardless of whether they held criminal records.

Attorney-General Jarrod Bleijie, who has just returned from holidays, could not guarantee that a legal document, such as a statutory declaration stating a person had officially resigned their gang membership, would be enough to save a former member's or associate's licence.

"That again is a case-by-case basis, and it is going to be based on evidence that the police provide to the regulator," he said.