"Your kind should be required by law to wear black!"
He was required by law to wear it at all times.
In my first job I was required to wear a suit.
In high level games, other officials will also be required to wear a uniform.
Students are required to wear a uniform once a week.
Also, in the past, girls were required to wear ties.
Students are required to wear a uniform to school daily.
Students at all schools are required to wear school uniforms.
All students in the district are required to wear school uniforms.
And the children are usually required to wear uniforms in school.