Karl is right when he says it will cost you a lot to shoot your own - if by shooting your own, we mean hiring a professional, commercial photographer who charges a substantial day rate.
Assuming you do business in the US, you will also not own the images. S/he will. You will have very specific usage rights that you negotiate separately from the shooting fee - which will be higher than even Getty.
So when I recommend you shoot your own, I mean exactly that: acquire a good DSLR camera, a monopod or a tripod - and learn to use it. Yourself.
That's the surest way to be clear of copyright restrictions.
If you have any experience in the visual fields, you already have an eye for composition. If not, you can take video instruction at lynda.com.
If you have creatives on staff - full-time employees who get benefits - you can also use images they take and claim ownership on behalf of the company as work-for-hire. Note that you cannot claim ownership of images they shoot that you have not specifically asked them for - no vacation pics, no shots of their pets, no using their mother as an unwitting model.
If you need a shot of a table and chairs, they can shoot the ones in your office - or ones you buy from a store for the purpose. Or they can shoot their own furniture if they want - but it must be clear that they've chosen to use those things voluntarily and specifically.
I could go on forever on this subject - I have been a designer/creative director since 1983 (32 years) and started shooting my own images about eight years ago precisely to meet the needs you now have. I also am shooting and editing video as well, thanks to the ever-decreasing costs of the tools!
Hope this helps!