The components of employment contract:.
I. In GA Cole "personnel Management- are mentioned such components:.
The employee's scale or rate of pay.
The intervals at which he will be paid.
The entitlement to holidays.
Sick pay arrangements.
Pension scheme arrangements.
The terms of notice.
The title of the job.
Specify the rules relating to the job, or indicate where they may be found.
Specify the procedure for voicing any grievance and obtaining redress.
State whether there is a contracting-out certificate in force for the job.
II. The written statement must cover: (www.cst.gov.uk/er/individual/statement-pl700.htm).
The date when the employment (and the period of continuous employment) began;.
Remuneration and the intervals at which it is to be paid; .
Hours of work; .
Holiday entitlement; .
Entitlement to sick leave, including any entitlement to sick pay; .
Pensions and pension schemes; .
The entitlement of employer and employee to notice of termination; .
Job title or a brief job description; .
Where it is not permanent, the period for which the employment is expected to continue or, if it is for a fixed term, the date when it is to end. .
Either the place of work or, if the employee is required or allowed to work in more than one location, an indication of this and of the employer's address; .
Details of the existence of any relevant collective agreements which directly affect the terms and conditions of the employee's employment - including, where the employer is not a party, the persons by whom they were made. .
III. By Marti Kubik it should include;.
Terms of employment.
Compensation.
Professional expenses.
Paid time off.
Employee benefit programs.
Facilities support.
Professional liability insurance.
Termination clause.
.
It is very hard to say what kind of elements employment contract must have, because it can differ due to that state law and codes. But as you can see The last one is the simplest structure, the first one is medium level and in my opinion the second structure includes almost the most important elements.