Contribution rates in Colorado for 2014 fall under the Standard Premium Rate Schedule providing for reserve ratios from “0.004 to 0.006.” These rates range from 0.66% to 3.79% for positive employers and from 4.87% to 8.90% for negative employers, with unrated employers paying 4.03%. The base rates for new employers in 2014 are as follows: 1.7%, nonconstruction; 6.49%, general construction; 8.90%, heavy construction; and 6.49%, trades. The bond-principal charge in 2014 is 22.19% of each subject employer’s base premium rate and the interest rate is 0.00147% (DLE Communication).