ATTACHMENT D

Hourly Labor Costs Used in Estimating Respondent Burden Costs

Worker Category	Raw Hourly 

Wage Rate a	Loaded Hourly 

Wage Rate b

Construction sector worker	$20.36c	$31.35 

Construction supervisor	$29.46d 	$45.37 

Clerical worker	$14.42e 	$22.21 

Brake and clutch repair mechanic	$18.05f 	$27.80 

Brake and clutch repair supervisor	$28.44g	$43.80 

Industrial hygienist	$35.50h 	$54.67 

Source:

a) BLS, 2009b, US Bureau of Labor Statistics, May 2008 National
Occupational Employment and Wage Estimates May, 2009.  Occupations are
the same as those used in the previous ICR.

b) EPA calculated the loaded hourly wage rate by inflating the raw
hourly wage rate by 54 percent to account for benefits and overhead
(EPA, 1992).  In contrast to the wage rates, the total benefits figures
for December 2008 in BLS, 2009a are for the State and local government
sector.  The data show that for State and local government workers the
cost per hour worked figures for total compensation and wages and salary
are $36.55 and $24.83, respectively.  This would indicate that benefits
represent a 37 percent increase over wages and salary.  EPA has also
used a figure of 17 percent to represent overhead.  Combined, these
result in the 54 percent figure used above.  

c) This is the mean hourly wage for the “Construction and Extraction
Occupations (Major Group)” category, NAICS 47-0000, in BLS, 2009b. 

d) This is the mean hourly wage for the “First-Line
Supervisors/Managers of Construction Trades and Extraction Workers”
category, NAICS 49-1011, in BLS, 2009b.  

e) This is the mean hourly wage for the “Secretaries, Except Legal,
Medical and Executive” category, NAICS 43-6014, in BLS, 2009b.  

f) This is the mean hourly wage for the “Automotive Service
Technicians and Mechanics” category, NAICS 49-3023, in BLS, 2009b.

g) This is the mean hourly wage for the “First-Line
Supervisors/Managers of Mechanics, Installers, and Repairers”
category, NAICS 49-1011, in BLS, 2009b. 

h) Because there is no industrial hygienist category in BLS, 2009b, the
mean hourly wage for the “Health and Safety Engineers, Except Mining
Safety Engineers and Inspectors” category NAICS17-2111, in BLS, 2009b
was used.  This category was used based on the similarity of duties as
described in the data. 



 

References for Attachment D

BLS 2009a, US Bureau of Labor Statistics Employer Costs for Employee
Compensation	Historical Listings. September 2009 Available at

  HYPERLINK
"ftp://ftp.bls.gov/pub/special.requests/ocwc/ect/ececqrtn.pdf" 
ftp://ftp.bls.gov/pub/special.requests/ocwc/ect/ececqrtn.pdf 

BLS 2009b, US Bureau of Labor Statistics, May 2008 National Occupational
Employment and	Wage Estimates May, 2009.  Available at
http://www.bls.gov/oes/current/oes_nat.htm

EPA, 1992, U.S. Environmental Protection Agency, 1992.  Office of
Policy, Planning and Evaluation.  Instructions for Preparing Information
Collection Requests (ICRs).  June 1.

