Advice needed please,i am due to return to work next month from mat leave and was told by my senior manager to write with my date of return so she can notify the payroll .Unfortunately my depression has been very bad and i may not be able to return to work when i had planned to,my doctor said if im no better then she will sign me off.Do i still need to write with the return date i had planned or should i leave it until i know for sure and should i notify occupational health?? TIA.x