Good advice, and I'd add that wily employers who try to add clauses re probationary periods and/or that x% of your students should like your lessons at a certain point in time, usually 4 or 6 weeks after your teaching has commenced, should be avoided like the plague. Clauses like that are designed so that you can be sent packing in good time for your employer to replace you without too much difficulty, if someone better, in his eyes, can be recruited. Probationary periods and popularity stakes are not needed at all to supplement the terms and conditions of the original SAFEA contract, which are fair to both parties. Ensure that none of your employment rights are compromised before signing a contract. Remember that the SAFEA one is the fairest on offer by a long way in this respect.