Iowa Public Radio: A new workplace drug testing law went into effect this week so Iowa employers will be allowed to discipline more workers for inebriation on the job. The law will lower the allowed workplace blood alcohol standard from 0.04 percent to 0.02 percent to bring Iowa in line with federal law. Sukup Manufacturing External Relations Manager Rachel Geilenfeld lobbied the legislature for the change. The federal standard is 0.02 for employees operating heavy equipment. Geilenfeld said Iowa’s more lenient standard created confusion, especially when an employee was in violation of the federal standard, but not the Iowa law.