Hello. I've been given an opportunity by a senior manager and I think this subreddit could give me a hand.

So I've been given access to the company's databases (which includes all the timesheets since the beginning of 2021). It's a Middle Eastern (Gulf) contracting company (construction industry). They take construction projects and they have somewhere between 1000-2000 employees (depending on the projects, they occasionally hire people that don't have contracts with the companies for specific tasks on the given project) but every single person that works in their projects is in the timesheets (whether he's directly employed or not) and timesheets include who worked on a specific day on a specific job, if the employee was absent or present (if he had to do overtime or no and how many hours of overtime he had to do), whether he is on a paid or unpaid vacation (or on sick leave), what task each employee does, etc (the usual stuff) but sadly, there ain't no monetary information yet (how much things cost - the only 'money' data I have access to is how much each employee cost the company in a normal day (on average)).

My task is to learn the data and figure out ways to use it to improve the performance or help the seniors to make decisions. I've learnt a bit of data sciene/data analysis (it is not my field per se but I had to learn these things in parallel with what I do), so I'd like to ask if anybody has any suggestion/idea or if somebody was put in a similar situation who would like to share his experience. Thank you!