by contract

By contract the teachers work a 6 hour 50 minute day.

He had taken it to work by contract at 2s.

By contract the teachers work a 7 hour 10 minute day.

Many city employees work 35 hours a week by contract.

By contract, each teacher gets a 45-minute preparation period a day.

Night differential pay for the police actually starts, by contract, at 11 in the morning.

Many hope to have laws that will cover those not bound by contracts.

This was by far his largest contract to date and he made two controversial decisions.

The party has no time to finish, except explicitly expressed by contract.

The Ducks will lease the park and remain there by contract until at least 2010.