Will I have to do Oliver Wyman Online Tests?

Not necessarily, depending on which office you apply for.

In selected countries, the Numerical Reasoning Test is no longer required, e.g. if you apply for German offices.

Just be sure to prepare accordingly in case you have to do it - it is quite sophisticated, however, you will find information on questions online.

Best

Yes, you will. It's only a numerical test and it's made by them (i.e. they don't use external service like SHL).

Yes, they do. You can find some good information here: https://www.wallstreetoasis.com/forums/oliver-wyman-numerical-reasoning-test

The Oliver Wyman test is one of the hardest tests out there for consultancies - most of the questions are similar to GMAT-type question (e.g. ratios, geometry).

One word of warning is don't worry if you don't finish the test - very few people do and the pass % is quite low!

Cheers,

Alessandro

Usually everybody should make this test. But it also may depends on the office. 

If you get less than 50% of correct answer than you are out. But also, please remember, that you will be penalized for the wrong answers. 

GB