Sunday, 5 June 2016

The Gender Pay Gap

Disclaimer: The contents of this blog are entirely the opinion of the author and are in no way be interpreted as a statements of fact nor as professional or personal advice of any kind. If in doubt, research it yourself.



According to various groups that either have an agenda (Feminists, SJW's, Hillary Clinton, the left wing media) or don't know how to correctly interpret statistics (all of the above) there is a huge and unfair disparity between what men and women are paid "for the same work". These groups will tell you that it's down to some "vast right wing conspiracy" or "the patriarchy" or "misogyny" or some other such nonsense and that women are discriminated against and are only paid some percentage of a mans wage for doing the exact same job.
This is nonsense, and I'm going to explain why.
Where does the myth come from?
Simply, bad interpretations of data. The currently touted figure is that women are paid ~77% of a mans wage for the same work. The "for the same work" bit is complete bullshit. Anybody who tells you "for the same work" is either lying to your face or has been taken in by someone who was lying to theirs. As for the percentage part, that figure is arrived at using the following method:
  1. Add up the total annual wages for all the women in the country,
  2. Divide the total above by the number of women workers in the country,
  3. Do the same for the men,
  4. Express one as a percentage of the other.

This is flawed for a number of glaringly obvious reasons. Just some of the things it doesn't take into account include:

  • People working in different fields
  • People having different specialisations in the same field
  • People being employed on a full time or part time basis
  • People working overtime
  • People receiving promotions
  • Differences in qualifications
  • Differences in experience
  • Differences in time employed at their current job
  • People taking time off work
  • People negotiating wages


Now let's examine some of the above the more quantifiable differences above.  For the rest of this post direct quotes taken from the sources will be in this colour, and my own comments opinions or interpretations will be in italics. Statistics quoted come from the sources linked. I've also noted some real examples of differences in pay due to gender at the bottom, as well as a host of links to other related articles.

Women don't negotiate their wages as much as men(sort of)
A small study (74 participants) at Carnegie Mellon found that when volunteers told they would be paid $3 for their time, 8 times more men than women asked for more money. A larger group (153) was told that the payment would be negotiable between $3 and $10, and 58% of women and 81% of men asked for more. Another study asked masters degree graduates whether they had negotiated starting salaries for their jobs. 12.5% of the women had compared to 51% of the men. the negotiators managed to get an average of 7.4% more. These studies came about because a group of female PHD students lodged a complaint that all of the male PHD students on their course were teaching classes by themselves whereas they(the females) were only teaching assistants. The reason for this as it turned out was that the males had actually asked to teach whereas the females had not.
Another study from the US National Bureau of Economic Research shows that women don't negotiate their wages as much as men do unless it is explicitly stated that negotiating is an option, in which case they negotiate more.
In job adverts where the wages were not explicitly stated as being negotiable (herein T1), 31.9% of women and 46.6% of men applied. Where the wages were explicitly stated as being negotiable (T2) 33% of women and 41.2% of men applied. More women than men prefer an environment where they don't think they will have to negotiate their salary.
In T1, 8.2% of female applicants and 10.6% of male applicants chose to negotiate over wages.
In T2, where the wages were explicitly stated as being negotiable, 23.9% of female applicants and 22% of male applicants negotiated.
When the possibility of negotiation is ambiguous more men (by about 29%) will try to negotiate, but when it is an explicit option more women(~8.6%) will.
If we were to go by the results of the USBER study, and assume that negotiating wages would get you a 4% better deal on average(the 7.4% for the masters graduates seems a little high for the average job), that there is an even split between jobs advertising the possibility of negotiation and jobs that do not, and all other things being equal, this would account for a wage gap of 0.01%, or 0.02% if you use the 7.4% figure. If we use the Carnegie Mellon figures for numbers of negotiators we can account for a difference of 1.51% @4% salary increase or 2.75% @7.4% salary increase.
To get a more precise idea of how this would contribute to the wage gap there would need to be a study of what proportion of jobs advertise the possibility of negotiating wages, if there was a difference between higher paid and lower paid jobs in that respect, and if people going for higher paying jobs were more or less likely to negotiate than the average. From my own previous experiences with job hunting in the past most adverts did not specifically state that wages were negotiable, however that is too small and narrow of a sample size to be of value.


Women have more sick days than men
The UK Office of National Statistics Labour Force Survey from 2013 shows that on average women lose 2.6% of their hours to sickness each year whereas men lose 1.6%.

Assuming this sick leave is unpaid, and all other things being equal, the sick day difference alone accounts for a pay gap of just over 1%.

A greater percentage of women than men will take time off work, reduce their working hours, turn down promotions or stop working entirely for family reasons.
A Pew Research Survey from 2013 ( a nationally representative sample of 2,002 adults, including 1,254 parents) determined the following:
42% of mothers had reduced their work hours, compared to 28% of fathers,
39% of mothers had taken "significant" time off work (fathers 24%),
27% of mothers had quit their job to take care of family responsibilities (fathers 10%)
13% of mothers had turned down a promotion (fathers 10%)

As there's no way of quantifying how much mothers and fathers had reduced their work hours by (either in real or relative terms), or a precise definition of what constitutes a "significant" amount of time off work, and if we assume that the parents who had left the workforce entirely aren't included in average wage statistics, we are left with the figures on promotions.
According to WorldatWork, in 2011 8.4% of employees received promotions and their average increase in pay as a result of a promotion was 7.4%. If we take into account ratios of male and female workers (69.703m women to 79.131m men), assume promotions were split accordingly, and also assume equal hours worked and hourly pay, this alone accounts for a wage gap of 0.02%. Again, a tiny figure, but the only one calculable from the available data and also the smallest difference in the 4 figures above.
This CNN article cites a study in the Harvard Business Review as stating that 40% of women have taken time off of work compared to just 1/4 of men. It also says that men tend to leave in order to change career or start a business (the type of action that may result in higher earnings) but that women tend to leave for family reasons (most likely to result in no income).

Men tend to work longer hours than women.
"On the days they worked, employed men worked 52 minutes more than employed women. This difference partly reflects women's greater likelihood of working part time. However, even among full-time workers (those usually working 35 hours or more per week), men worked longer than women—8.4 hours compared with 7.8 hours."

From the chart data, the average day for a man is 8.1 hours whereas for a woman it is 7.3 hours. Assuming a linear relationship between hours worked and wages paid, and assuming the same fields of work with the same pay scales, this 0.8 hour difference alone accounts for a pay gap of just under 10% of the mans wages. This is even without taking into account overtime. It is also worth noting however that hours worked and wages paid do not scale linearly, and as such the difference in pay due to working time alone will be greater than the 10% figure we've used.

Longer hours are paid disproportionately more than shorter hours.
Harvard professor of economics Claudia Goldin talks to Freakanomics
"But, really the lion’s share of the difference is due to the fact that in every occupation, just about, women receive less than men. And they’re receiving less than men for a host of reasons, one of which is that they’re not working the same amount of time. And in many occupations, working more hours or being there when the firm wants you to be there earns you a lot more."
"By and large, it appears that there’s just a very high cost of temporal flexibility in certain occupations."
From page 21 of A GRAND GENDER CONVERGENCE: ITS LAST CHAPTER, regarding MBA recipients
"Three factors explain 84 percent of the gap. Training prior to MBA receipt, (e.g., finance courses, GPA) accounts for 24 percent. Career interruptions and job experience account for 30 percent, and differences in weekly hours are the remaining 30 percent. Importantly, about two-thirds of the total penalty from job interruptions is due to taking any time out."
"Women with children work 24 percent fewer hours per week than men or than women without children."
"MBA moms with high-earning spouses have labor force rates that are 18.5 percentage points lower than those with lesser-earnings spouses. They work 19 percent fewer hours per week (when working) than those with spouses below the high-income level."
From page 26
"What, then, is the cause of the remaining pay gap? Quite simply the gap exists because hours of work in many occupations are worth more when given at particular moments and when the hours are more continuous. That is, in many occupations earnings have a nonlinear relationship with respect to hours. A flexible schedule often comes at a high price, particularly in the corporate, financial, and legal worlds."
Essentially the more hours you work the greater your hourly rate of pay.

Women entrepreneurs pay themselves less than men do
"When female entrepreneurs pay themselves a salary (and they do just 41% of the time in contrast with 53% of their male peers), they earn $60,000. Male founders write themselves much fatter paychecks–$78,000 on average."
Although it might not be as simple as women just choosing to pay themselves less.
"Of course there’s another element to the entrepreneurship pay gap: on the whole women-owned firms are smaller than men-owned operations and pull in lower revenues on average."
According to the National Women's Business Council 36.3% of nonfarm and privately-held businesses are owned by women. This would mean that the difference in entrepreneurs pay (~23%, where have we seen that figure before?) when factored into the overall picture would account for a paygap of 2.89%. However, I have doubts about the Forbes article. Firstly, the page it links to regarding the 41%/53% and pay rates makes no mention of those figures at all. Secondly the NWBC Fact Sheet states that 89.5% of women owned businesses have no other employees, which if the 41% figure is correct would mean that some 5.8 million women are working for themselves without being paid.

Men tend to work in less desirable jobs, which also pay more
This article on CBS News also states that men choose to work in higher paying fields, are more likely to work in more dangerous jobs or in uncomfortable or isolated locations, work unsociable hours, and work in higher stress and higher paid specializations within a given field.

The real pay gap is much lower than 23%, if it exists at all
This article from the Huffington Post covers a study by the American Association of University Women(AAUW) "Graduating to a Pay Gap". By looking at the numbers the pay gap is actually around 6.6%. A 2009 study by the US Department of Labor "Gender Wage Gap Final Report" also shows that when taking into account career and family attributes the pay gap drops to between 4.8% and 7%. The AAUW study also doesn't take into account wage negotiations (which we determined above to account for a pay gap of between 0.1% and 2.75%), and it is overly broad with occupational and education categories.

Individual choice is likely the reason for the difference in pay between men and women
Gender Wage Gap Final Report prepared by CONSAD Research Corporation for the US Department of Labor
"Although additional research in this area is clearly needed, this study leads to the unambiguous conclusion that the differences in the compensation of men and women are the result of a multitude of factors and that the raw wage gap should not be used as the basis to justify corrective action.  Indeed, there may be nothing to correct. The differences in raw wages may be almost entirely the result of the individual choices being made by both male and female workers."

Results & Conclusion
Let's put everything quantifiable above together and see what we have with a few additional statistics.
Bureau of Labor Statistics: The US workforce is made up of 79,131,000 men and 69,703,000 women.
Survey of Income and Program Participation, unpublished tabulations: Estimated mothers in the US is 85.4 million (2009)
Survey of Income and Program Participation: Estimated fathers in the US is 70.1 million (2008)
Department Of Labor: Labour force participation for mothers is 69.9% and fathers is 92.8%

Here is a summary of the few differences we've managed to quantify:
Negotiating wages: 0.01% - 2.75%
Sick Days: 1%
Parents turning down promotions: 0.01%
Average working day: 10%
When you add the above you can account for a pay gap of between 11.02% and 12.76%. If you look at them collectively (as in reality these terms will tend to multiply together) you can account for a pay gap of between 10.69% to 13.82%. We've managed to reduce the pay gap from 23% down to 10-13% in just one blog post. Now, I'm sure some people will argue that we've not been able to account for that last 10-13%, but we've not taken into account any of the following differences.

  • People working in different fields
  • People having different specialisations in the same field
  • People receiving promotions
  • Differences in qualifications
  • Differences in experience
  • Differences in time employed at their current job

There's also some articles linked below that have revised the pay gap down to between 4.8% and 7%, again without accounting for all of the factors above.
It's at this point we should also remember the burden of proof. If someone wants to tell you that women are paid less than men because of some gender bias then it's up to them to prove that is the cause. It is not up to anybody to disprove a point that has not first been proven.
"That which can be asserted without evidence can be dismissed without evidence" -Christopher Hitchens

Apart from the data above, just use some common sense. Large corporations really care very little for factors other than their bottom line. Profits and dividends keep the shareholders happy, and when your execs are given stock options  they themselves become shareholders. As a result, it's in their direct interest to make as much profit as possible. With this in mind, please examine the small table below.


Current

Hiring an all-female workforce
Company
Profit
Wages
% Female

Wages
Profit
Difference
% Increase
Shell
2,200.00
12,558.00
30.00%

10,386.32
4,371.68
2,171.68
98.71%
Unilever
7,220.00
5,474.00
32.00%

4,549.85
8,144.15
924.15
12.80%
Barclays PLC
2,073.00
4,954.00
48.92%

4,298.17
2,728.83
655.83
31.64%
ARM
414.80
246.70
17.00%

197.69
463.81
49.01
11.82%
BAE
1,090.00
5,052.00
20.00%

4,077.61
2,064.39
974.39
89.39%
RM
16.47
56.89
33.86%

47.51
25.86
9.39
56.97%

The above table is an example of a few companies showing their profit before tax and wage bills(in millions), as well as the percentage of their workforce that is female. On the right hand side of the table we can see what their wage bills and profits would look like if the "women are paid 77% of what men are paid for the same work" myth were actually true. If the myth were true then simply by hiring all women ARM (processor manufacturer) could increase their profitability by over 11%, Barclays by over 31%, and Shell by a whopping 98%. Does anybody really think a huge company like Shell is going to turn down the opportunity to increase their profits by 98%?


Real gender pay gaps
There are however a few industries where pay gaps exist solely because of gender.
Porn: articles from Alternet and The Daily Star both indicate that female performers are paid in the region of 60-67% more than male performers.
Modelling: Fortune reports that female models make around 47.5% more than males, with the top highest paid female supermodel (Gisele Bundchen) being paid almost 17 times (1700%) as much has her male counterpart. Even the reported 10th highest earning female is paid over 250% of the highest paid males earnings.In fact if you add up the the earnings of the top ten male and female models, the women make $105million whereas the men only bring in $7,645,000. The top 10 males in total would only place 4th on the women's list. This equates to a pay gap of 92.72% of the women's earnings, or 1,273% of the mens.
I would also be willing to wager that female strippers and escorts out-earn males by a considerable margin but I couldn't find any data on the subject.
Tennis doesn't have a pay gap as there is parity between genders for prize money, however there is a `work gap` and a `skill gap`. Men play until one competitor has won 3 sets (3-5 sets total) whereas women only play until 2 sets(2-3 sets total) have been won. This would indicate that women do somewhere between 40% and 100% of the work of the men for the exact same prize money, which pro-rata equates to a wage of anything up to 250% of that of the men(a wage gap of 150% of the mens wage). There have also been a number of times when men and women have competed against each other. The most recent being at the 1998 Australian open where the Williams sisters claimed they could beat any man outside the top 200. Karsten Braasch, at the time ranked 203, accepted and played them back to back for a single set each. He beat Serena 6-1 then Venus 6-2. In this instance it is clear to see that women tennis players are paid the same as men for doing less work of vastly inferior quality.


Links
A few articles that point out how the gender wage gap is a myth, a fallacy or a lie

Men tend to make education choices that relate to higher earnings, and when controlling for several outside factors the gap drops to between -1% and 5%

Pay statistics are invalid as they don't compare like to like (2010)

Contrary to feminist propaganda, there is no discrimination in science

Between the ages of 22 and 30 women earn 8% more than men

Female corporate directors are paid ~15% more than men (2007)

Women CEOs are paid ~40% more than men, receiving 30% pay increases while men took cuts (2010)

More than 1/3 of working dads would leave their jobs if their spouse made enough to support the family (2007)

Equality at home happens when mothers let go (2009)
http://www.usatoday.com/news/health/2009-05-04-equal-parenting_N.htm

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