What is the most common alteration job known to man?
That's and easy one... Pant hems.
The reason why is because most all dress pants come un-hemmed or extra long to fit a wide variety of people.
And the saddest thing is people don't take the time to get their pants hemmed by a professional tailor or dedicate themselves to learning this skill.
So if you are looking to learn how to get your dress pants hemmed look no further because this is your one stop shop for pant hems.