Low-wage workers in Pennsylvania are missing out on the pay hikes taking effect in 22 other states and 43 cities and counties this month, through increases in their minimum wages. Stephen Herzenberg, economist and executive director of the Keystone Research Center, said Pennsylvania is surrounded by neighboring states all are ringing in the new year with higher minimum wages. Since 2009, Pennsylvania s minimum wage has been $7.25 per hour, which he said hurts workers, the economy and small businesses. .