Student or Learner
Is it OK to say in English: I have an employment contract OR I have an order contract OR I have a contract to perform a specified task.
Hmm, is it possible to "have a contract to supply ..." while you're working at school as a teacher? Maybe it's something similar to "temporary contract"? You work and they pay you only for the hours that you teach. You don't get paid when you're on a sick leave, on vacation etc.