Legally, no. Yet equal work is only easy to judge in more cut and dry situations.
I've heard people say a lot about the wage gap and women earning 79% of what men do. This confused me with the equal pay laws and I looked into a bunch.
As far as I can tell by my own scrutiny and people who talk about it, they do earn about that much as men, but its used in a misleading way. Someone wrote a book about it and found like 40 reasons for the difference in earnings. This is an important point, that women EARN less but are paid equal or close.
To sum up some key points:
Men take more overtime, riskier jobs, and are more willing to move. If women want kids that often both makes them take maternity leave and then not want to work overtime or maybe not even full or part time, so they can be with their kids more. This is a pretty reasonable thing to want, Id say.
Also there are some men who use earnings as a sort of way to 'keep score in life' and they are keen to work almost nonstop, with 80 hour work weeks. These men are rare but will skew the numbers quite a bit. To go with this, almost no women have this drive to work nonstop, which I would say is irrational. Women are certainly capable and will work hard if need be. However if they reach the point of having more than enough, they generally prefer to have other aspects in their life such as family and friends. In other words, there are many more men than women who are happy to 'have no life'.
Of course I am speaking on the level of populations of people. There will always be individuals who do not fit the trend. It is not good to think of men and women as always having any certain trait.
In looking into some of this I learned an important factor: men and women are more alike than different. One clear example I heard is that if you take a random man and woman and ask who is more aggressive, odds are its the woman 40% of the time, man 60%. Pretty close to 50/50. However, if you take 100 people in a room and ask who is the most aggressive person, it is a man over 90% of the time. Thats why there are just over 10 times as many men in jail as women. That is a bit of a tangent but it helps to understand population-level math.
I find in these debates people focus on what men and women are capable of. Men and women are equally capable or close enough in most areas. A bigger part of the picture is what they WANT. Interests drive choices more than capability.
From what I heard that a true wage gap in terms of measuring sexism alone would be something more like 96 to 98 cents for the exact same job/hours, not 79cents which includes every factor. I agree we should aim to remove sexism from pay as much as reasonably possible. On the other hand we are pretty close to having already done so, especially for how historically new women are to the workforce en masse.
The people I've heard talking about this highlighted offering assertiveness/negotiation training for women who are interested since a big part of the 'sexism in pay' comes from not paying women more due to them being less inclined to ask for more pay and negotiate strongly.
Cheers to all the ladies reading, I wish you the best in your careers! Ask for that raise :)