The Maine Department of Labor said the majority of businesses won’t be able to fire employees who test positive for cannabis unless employers can prove impairment on the job.

Backers of the measure said the law that goes into effect in February would leave employer protections in place and maintain a drug-free environment.

Julie Rabinowitz from the Maine Department of Labor urged lawmakers to change the law and give employers more rights. The Legislature’s labor committee is expected to handle the matter.

Social cannabis use in Maine was regulated in November, but sales are on hold until state regulations are created.