The women are NOT wearing professional attire, even by worldly standards. The men, also, don't look well dressed. I work twice a week at a NYC (Manhattan) business concern. If women wear pants, they must be pant suits, matching top and bottom with a jacket top that covers to the thighs. Men must wear conservatively colored three piece suits with the jacket or vest on.
What is pictured here would be acceptable only once a month on casual Friday. If an employee will be doing business in person with a client on that day, then formal attire is still required.
At my full-time job, dress standards are a little loser, but women are to wear modest skirts or dresses, and men suits and ties. It is permissible to remove one's jacket in warm weather, but not ties. Women may wear no shorter than 3" below the knee, and no shorter than 1/4 sleeves. Longer is preferred. This is a concern run by conservative Protestants. Also disallowed, tattoos that anyone can see, long hair or jewelery on men, male style or extreme hairstyles, excessive jewelry on women. Bare legs are also a no-no.
To my way of thinking, the SSPX office workers look generally too casual for the office. And really, whats with the high boots on the woman? It's immodest for some, and unprofessional for all.