Democratic lawmakers and state attorneys general are amplifying attacks on the Labor Department’s proposal on independent contractor status, using requests to extend an abbreviated public comment period to preview a potential legal challenge, Bloomberg Law reported.

In letters to Labor Secretary Eugene Scalia, a coalition of 17 senators and attorneys general from 21 states plus the District of Columbia criticized the agency for only providing 30 days for public input on its proposed rule, which was released on Sept. 22. The agency had given 60 days for public comment on prior rules.

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