Yes, terms may be implied as a result of statute, custom and practice, the officious bystander test, business efficacy and the duties of the employer/ee.
Statute
Statute implies terms relating to minimum notice, equal pay and working time.
Custom and practice
A term may be implied by virtue of the custom and practice of the workplace and/or employer, for example where an employer has given staff a bonus every Christmas for the past decade.
The officious bystander test
A term will be implied where it is so obvious that both parties would have immediately agreed to it at the outset, for example that teachers don’t need to report to school for teaching during the holidays.
The business efficacy test
A term may be implied to make a contract workable, for example a term requiring a chauffeur to hold a valid driving licence.
Duties of the employer
Duty to pay: if a contract is silent, the employee has an implied right to reasonable remuneration and can make a claim if they are paid under the minimum wage.
Duty to provide work: there may be a duty where there is work to be done, the employee is willing to do it and/or there is a need for frequent practice of skills.
Duty to take reasonable care for the employee’s health and safety: an employer must ensure the employee’s physical and mental health and safety and provide a safe system of work.
References: an employer is not obliged to give a reference but if they are to provide one, it must be true, accurate and fair.
Duties of the employee
Duty to provide personal service: an employee has a personal obligation to perform work.
Duty to work with reasonable skills, diligence and care: an employee must be reasonably competent to perform their duties with care.
Duty of good faith and confidence: the employee must be honest and must not act against the interests of the business.
The employer and employee also have a shared duty of trust and confidence.