The People's Republic of California seems not to have noticed that there are sectors with sex imbalance far more pronounced than the boardroom. The nation's electrical power-line installers and repairers, roofers, brickmasons, blockmasons, and stonemasons are more than 99% male.

Labor Force Statistics from the Current Population Survey

Perhaps the good ol' boys club has practiced discrimination and kept willing and capable women out of these positions. Or perhaps many women recognize that these jobs entail long hours, time away from home, and stress, and they prefer jobs with more predictable schedules, less physical danger, and more human interaction. We might want to find out if the imbalance is due to bias or preference before we intervene and force people into different jobs.

Ask a friendly CEO (once he touches down from his latest flight) if life in the executive C-Suite is for everyone.

Of course, there are compensations for the hardships, and executive salaries tend to be high. Is there a pattern in the most sex-imbalanced jobs showing that women are relegated to lower-paying careers?

The BLS measures male/female job ratio, and median salaries for those job descriptions appear in May 2017 Occupation Profiles.

Here are the salaries for the most imbalanced job descriptions (top ten with 2% or fewer female, or 92% or more female):

   $68,710 Electrical power-line installers and repairers
   $42,780 Roofers
   $53,390 Brickmasons, blockmasons, and stonemasons
   $45,490 Cement masons, concrete finishers, and terrazzo workers
   $45,630 Automotive body and related repairers
   $55,040 Mining machine operators
   $51,890 Operating engineers and other construction equipment operators
   $48,000 Bus and truck mechanics and diesel engine specialists
   $39,160 Miscellaneous vehicle and mobile equipment mechanics, installers, and repairers
   $49,530 Heating, air conditioning, and refrigeration mechanics and installers

   $49,962 AVERAGE 

   $42,820 Medical records and health information technicians
  $107,480 Nurse practitioners
   $30,490 Hairdressers, hairstylists, and cosmetologists
   $23,760 Childcare workers
   $60,150 Dietitians and nutritionists
   $74,680 Dental hygienists
   $41,062 Secretaries and administrative assistants
   $38,690 Dental assistants
   $39,601 Preschool and kindergarten teachers
   $79,770 Speech-language pathologists

   $53,850 AVERAGE

(Where the job description is a category, I have calculated a weighted average of the subcategory salaries. For example, non-special-ed kindergarten teachers earn $57,110, but three times as many preschool teachers earn $33,590, so the weighted average is $39,601.)