All those changes apply to work begun on or after June 1, 1986.

Often, changes apply mainly to new workers, so the message seems to be: Stay put.

President Clinton said the regulatory changes would apply to at least 100 drugs now under study.

The changes do not apply to companies that go broke this year.

The changes will apply from the 2010-11 tax year onwards.

At the time, the change applied only to 17-year-olds who had dropped out of school.

The change would only apply for persons born after October 2011.

But he said the change would not apply to other Western stations.

But the changes will only apply the next time a building must be inspected.

But the change did not apply to units already built.