The California Chamber of Commerce and other groups representing employers are starting to line up to oppose the initiative to legalize marijuana, charging that Proposition 19 would allow pot smokers to light up on the job and operate dangerous equipment while stoned.

Stepping up the campaign on Thursday, the chamber released a five-page analysis that starts: "Imagine a workplace where employees show up to work high on marijuana and there is nothing you can do about it."

Allan Zaremberg, the chamber's chief executive, criticized the measure, saying it would set a high bar for employers to act against workers using marijuana by requiring proof that they were actually impaired. "Prop. 19 creates a new protected class of California citizens," he said.

latimes.com