The CEO of Eli Lilly says Indiana’s proposed amendment banning gay marriage could hurt business.

Citing concerns that it would hurt employee recruitment, the company appealed to state lawmakers not to pass the constitutional amendment during this year’s legislative session. CEO John Lechleiter says he can’t say whether the state’s current same-sex marriage ban has deterred anyone from applying to work at the Indianapolis-based company, but he thinks the amendment definitely would.

“I think this legislation elevates this matter to a different level and I think [it] will be detrimental,” he says.

The amendment is not yet part of the state Constitution. It must pass the legislature again in two years, then be put to a public vote.