What was recently a hot topic within the regulatory community, conversations about Occupational Safety & Health Administration (OSHA) and Mine Safety & Health Administration (MSHA) whistleblower, retaliation, and discrimination claims have seemingly fallen by the wayside.  But don’t be fooled.  Two recent developments demonstrate that these US Department of Labor agencies continue to find novel ways to protect our nation’s workers when they raise safety, health, or other legal compliance concerns in the workplace. These include: (1) OSHA’s expedited determination Pilot Program; and (2) MSHA’s increased focus on “interference” claims.