Kiplinger reports that providing workers with medical care on the job is expanding significantly.  By 2016, 40% of large employers had medical clinics on-site or nearby, compared with 25% in 2013.  Most facilities are primary care and wellness clinics that charge little or nothing.  While most are run by contractors, up to 30% of them are company run.  Smaller employers are cooperating to offer services at shared clinics.