You've found the right candidate for your vacancy and now you're ready to offer them the opportunity to take the job. It's best to make the initial offer by phone where you can discuss the terms of employment and establish whether it's an acceptable offer. If not already agreed, any negotiations regarding salary or terms of employment should take stage at this point. Negotiating a salary is a tricky business so make sure you know exactly what you can and can't agree to and be prepared to have to go through a couple of rounds of negotiation before you reach an agreement. Let them know you will be sending out an offer letter by post. This letter should set out the main terms and conditions of the job and include: 1) their name; 2) the job title; 3) the date employment starts (and ends if it is a temporary role); 4) the length of the probation period (if applicable); 5) any conditions the offer is subject to; 6) any action required by the candidate (such as forwarding details of their work permit). Ask the candidate to send you a signed copy of the offer letter to establish the terms on which the offer was made in case of any future disputes.