Employers can flesh out the working relationships with their employees in HR policies.
For instance, certain employment conditions like expense allowances or training can be defined in an employee policy or employee handbook. In practice, these policies apply to employees' individual contracts, so the regulations are part of those contracts. That means they employer can't always change the policies unilaterally.
An employer can also set policies for specific conduct that is expected of employees. It could cover topics such as inappropriate behaviour and sexual harassment, alcohol and drug use, and the use of phones and social media during working hours. These are rules that, because of the authority dynamic, the employer can issue unilaterally.
It's wise for every employer to have an HR policy. The specialists at L&A Advocaten can advise and support employers in drafting, improving, and reviewing employment policies, employee handbooks, and/or codes of conduct.