The basic technique to test new employee is to formulate a survey in which you will ask the subject different questions regarding skills, experience and job responsibilities. Your employee can perform according to your expectations only if he/she is able to do a self-evaluation. You can also conduct an in-house survey in which you will ask other employees about their new colleague. However, this survey can be done a couple of weeks after the joining.
Ask them to give sample presentation:
To check their verbal communication skills, you can ask them to give a demo of a formal presentation. If your employee is responsible to handle a team then check how well he/ she coordinates with the subordinates.
Sample business correspondence:
After checking the verbal communication, now you will test their written communication skills. Ask them to draft some business letters for you and then read the content to determine its strengths and weaknesses.
Give them a task to develop a project plan and discuss various aspects of that project. You may direct them to work alone as it will be more helpful in evaluating their working style and efficiency.
Arrange different tests to check their management skills. For instance, you may give them the responsibility to organise an event with a team. This will not only help you to examine their managerial skills but also give them an opportunity to prove their worth. You may ask employee’s colleagues to give feedback on his/her conduct.
In the end, you need to arrange your observations and assessments in a report and have a detailed meeting with your employee. Discuss their strengths and weaknesses in a friendly manner and suggest some steps to make improvements.