Pros
Workday got the basics covered. The offices are reasonable (not counting lack of parking, occasional lines in the restrooms and constantly failing coffee machines), there are free snacks and fruits (yes!), ping pong and pool tables, fitness allowances and other perks. There are cool company events (the latest picnic and Halloween were below average but still not bad). On a more serious note, it's a large company with a lot of people and projects, it is well known in ERP world and has some very competitive products.
Cons
Speaking about irony ... Workday sales pitch is based around helping customers to make data driven decisions. You give us your data and we help you to make sense out of them. Not just review, but analyze and react, or, even better, be proactive. Great! However, for some reason internally Workday does exactly opposite. It avoids making data driven decisions. Setting clear goals and measuring the results? Feedback on the managers? Defining clear requirements for a promotion? Review of the projects? Measuring efficiency? Public metrics? No! Secrecy becomes an integral part of how the company operates. Sometimes we get people hired nobody knows why. Then people disappear without any explanation. Projects get started then cancelled - no explanations either. Security is increasingly based on obscurity. The technical debt is exploding. We are doing more and more work with less and less progress. And as many reviewers mentioned, the compensation is below market. If a lot of pointless work for little pay doesn't scare you away - you're welcome to join - and it should be easier by looking at the turnover numbers.