I'm Filipino by nationality and have been working in Saudi Arabia for more than 3 years. I've already started working on the requirements for getting a Schengen visa. The company/employer will be the one who is paying all the cost for my travel and stay during my holiday. Is there any format for proving that my company/employer will shoulder the expenses for me?
As @Vence commented, a letter from your employer will be more than enough for the embassy/consulate. If that money will be cashed to you enough time before your flight then you can deposit it in your bank account and attach the bank statement to your visa request. Both of these scenarios will grant you the visa.