Both anxiety and depression are caused by imbalances of the same brain hormones, namely serotonin, norepinephrine and dopamine. For this reason they are treated identically. Anti-depressants are used to treat both anxiety and depression and the medicine is often combined with psychological treatment such as cognitive behavioral therapy (CBT).
1 Public contractors may pay at prevailing wage rates without the regulation. 2  Average labor costs, including benefits and payroll taxes, are roughly one-quarter of construction costs. 3  Thus, even if a prevailing wage regulation raised wages by 10%, the impact on contract costs would be less than 2.5%.n a study of new school construction in British Columbia, researchers looked at six years of contract costs before and after the adoption of a prevailing wage law in 1992. Bilginsoy and Philips (2000) found that, without introducing any controls, prevailing wages correlated with 16% higher construction costs.
So, how much does a contractor cost, anywhere from 5% to 25% of the total project cost, with the average ranging 10-15%.ypically the contractor' s crew will be general carpentry trades people, some who may have more specialized skills. Exactly how a general contractor charges for a project depends on the type of contract you agree to. There are three common types of cost contracts, fixed price, time & materials and cost plus a fee.