How do i make a master sheet linked to other sub sheets

hello,

This is my first post, and I am having trouble with a project i am doing at work. We have a spreadsheet with different companies, but with all the same categories. Ideally i am trying to create a master sheet to monitor all the different companies more easily. I am attaching a sample of the the file, and whenever i add a new job to a sub sheet i want it to appear on the master sheet automatically. On the file i have attached, i just copied and pasted the jobs from the sub sheets. This would be too long and tedious if I had to do it everyday manually, therefore i would like to know the formula for this. Thank you very much for your help.