Earnings for construction equipment operators vary. In May 2006, median hourly earnings of wage and salary operating engineers and other construction equipment operators were $17.74. The middle 50 percent earned between $13.89 and $23.98. The lowest 10 percent earned less than $11.54, and the highest 10 percent earned more than $30.83. Median hourly earnings in the industries employing the largest numbers of operating engineers were:
| Highway, street, and bridge construction | $19.88 |
| Utility system construction | 18.62 |
| Other specialty trade contractors | 18.00 |
| Other heavy and civil engineering construction | 17.63 |
| Local government | 15.95 |
Median hourly earnings of wage and salary paving, surfacing, and tamping equipment operators were $15.05 in May 2006. The middle 50 percent earned between $11.98 and $19.71. The lowest 10 percent earned less than $9.97, and the highest 10 percent earned more than $25.30. Median hourly earnings in the industries employing the largest numbers of paving, surfacing, and tamping equipment operators in were as follows:
| Other specialty trade contractors | $15.26 |
| Highway, street, and bridge construction | 15.11 |
| Local government | 14.86 |
In May 2006, median hourly earnings of wage and salary piledriver operators were $22.20. The middle 50 percent earned between $16.31 and $31.65. The lowest 10 percent earned less than $12.83, and the highest 10 percent earned more than $37.28. Median hourly earnings in the industries employing the largest numbers of pile driver operators were as follows:
| Other heavy and civil engineering construction | $28.60 |
| Highway, street, and bridge construction | 22.50 |
| Other specialty trade contractors | 20.60 |
| Utility system construction | 18.62 |
Hourly pay is relatively high, particularly in large metropolitan areas. However, annual earnings of some workers may be lower than hourly rates would indicate because work time may be limited by bad weather. About 28 percent of construction equipment operators belong to a union.