Hope this helps. I am not a teacherTask:-
You are due to start a new job next week but you will not be able to because you have
Write a letter to your new employer. In your letter
• explain your situation
• describe your problems
• tell him/her when you think you can start.
I scheduled to start with your firm next week. But it regrets that I could not deal with this.
As you know, I have been working for my current employer for the last 4 years as the General Manager. I had explained to my employer that I would join with your firm from next week as in our agreement. Since I have involved in a lot of activities for the company, it is not easy for the new General Manager to take over and to understand all the responsibilities in the first month. Most critically the representatives of our biggest customers have not been in touch, hence there has not been enough communication for the new GM to replace and to take over his responsibilities. This was the reason why I have been requested by the top manager to extend my stay by a fortnight.
I would hereby like to need your kind permission to allow me to stay with my current company by a fortnight, then I can complete my current responsibilities.
I am looking forward to your acceptance. I am joining your company a fortnight later.