The uncertain legal and political environment surrounding the proposed salary threshold increase in the federal overtime rule is causing a number of companies to wait and see how everything plays out before changing how their employees are paid, employment law attorneys said this week.Thursday was supposed to be the effective date of the U.S. Department of Labor’s rule increasing the salary threshold for an exempt employee from $23,660 to $47,476. But a federal judge in Texas blocked it on Nov. 22.Adding to the …