FOI - Zero hour contracts [Nov 2020]

I write to request information about Greater London Assembly and Greater London Authority's policy and practice on zero hours contracts and other associated statistics under the Freedom of Information Act 2000.  

1. What is your policy on zero hours contracts?
2. How many workers are currently employed by Greater London Assembly and Greater London Authority on zero hours contracts? What is the breakdown of these figure according to (a) occupation, (b) sex, (c) race and (d) age?
3. How many workers are currently employed on zero hours contracts via agencies, contractors or sub-contractors that provide workers to Greater London Assembly and Greater London Authority?  If this data is not available, please provide the names of the agencies, contractors or sub-contractors that you use to employ workers indirectly.
4. How many workers are currently employed on minimum hours contracts directly by Greater London Assembly and Greater London Authority or via agencies, contractors or sub-contractors that provide workers to Greater London Assembly and Greater London Authority?
5. How many workers in total does Greater London Assembly and Greater London Authority currently employ? What is the breakdown of these figure according to (a) occupation, (b) sex, (c) race and (d) age?