Sir,
1. Under rule 2 (l) (C) of CENVAT Credit Rules, 2004 out door catering is excluded from the definition of input services. Hence you are not eligible to avail credit of service tax paid on canteen contract payment.
2. Regarding service tax paid on employees transport bill, under rule 2 (l) (B) of CENVAT Credit Rules, 2004 service provided by way of renting of motor vehicle in so far as they relate to a motor vehicle which is not a capital goods
3. under rule 2 (B) & (C) of CENVAT Credit Rules, 2004 Motor vehicles are treated as capital goods only when the said motor vehicle including the chassis is registered in the name of of the service provider and when used for providing -
(i) providing output service of renting of such motor vehicle; or
(ii) transportation of inputs and capital goods used for providing output services; or
(iii) providing an output service of courier agency; or
(iv) transportation of passengers; or
(v) renting of such motor vehicle; or
(vi) imparting motor driving skills.
Since transporting employees from their dwelling place to factory and back cannot be treated as transportation of passenger you are not eligible to avail the credit.