There may be exposure for an employer where they allow an employee to continue working whilst unfit for work, and particularly where they are covered by a medical certificate for the period. In this circumstance it would be prudent to advise the employee to return home for the remainder of the period, or to re-visit their doctor for a re-assessment if they believe their condition has improved and they are fit for work. An employer may consider paying for the costs of this re-assessment.