I am an employment lawyer. I have 27 years PQE and am an equity partner and head of department in a large, very well known firm.
I cannot see how the OP is making out her case. I mean there must be some way she is attacking it since she has other lawyers on board pursuing the claim for her but it simply isn't feasible as a legal argument as far as I can see.
Interestingly I was with a KC yesterday and asked him and he was also struggling to work out how this would be approached.
I'm very interested though.
Effectively, if this argument succeeded the OP would set a precedent which would be so far reaching that it would collapse businesses in all sectors across the country. That would then undoubtedly lead to a situation where companies were all scrambling to slash contractual holiday entitlement.
If a full time solicitor anywhere in the private sector is working 35 hours and only 35 hours then I'd be pretty surprised. In all likelihood, most are contracted to work core hours of 9-5 plus such other hours as are necessary to do the job. They probably then get around 5-6 weeks annual leave plus bank holidays. In reality this means most solicitors will be working closer to 50-60 and lots will be working far more than that. Many then don't even take the holidays they are entitled to.
Mr Parttimesolicitor works 3 days a week. The FTE entitlement is to 6 weeks leave and core hours of 35 plus such other hours as are necessary without additional remuneration. The pro rated entitlement is therefore to 3.6 weeks' leave.
Mr Parttimesolicitor says that over this three days he actually works 35 hours which is feasible. As a result he wants the full time holiday (and by extension of that argument, the full time salary) because the core hours are 35 per week. He is however conveniently ignoring the fact that his full time colleagues are working 60 hours not 35 hours because the job isn't an hourly paid job, its a salaried role where you work until the job is done. So Mr Parttimesolicitor wants to work 2/3 of the week but get all of the pay and all of the leave of a full time worker.
Effectively what Mr Parttimeworker wants is a job where he only works 9-5. That isn't his contracted role.
If the OP's argument succeeded on a contractual basis (in simple terms the more I work, the more holiday I get) then Miss Fulltimesolicitor who is contracted to work core FTE hours of 35 hours but actually is working 60% more than that would be able to use the principle to argue that she is entitled to 60% more leave. So suddenly Miss Fulltimesolicitor is "entitled to" 9.6 weeks' leave instead of 6 weeks' leave. Unsustainable when applied across a business.
It's then applied to all other benefits eg pension, salary etc
It can't succeed. You're asking the tribunal to imply a term that leave entitlement increases with hours worked in a salaried role. It doesn't. It is whatever the contract says it is.
The only way to think about attacking it is then to look at discrimination. Equal pay legislation can't help you. You can potentially claim on the basis of an inequity in benefits where someone is doing like work, work of equal value or WRE (unlikely in a law firm), but in order to succeed in the claim you have to show that the difference in the treatment is sex. It isn't, it's the contracted core hours.
So you're left with at best some sort of indirect discrimination claim along the lines of women are more likely to work part time and are therefore disproportionately disadvantaged by a policy to pay part timers less than full timers. But at this point I'm stumped since this only gets off the ground if they are not paid on a pro rated basis. So if full timer gets £100k/10 weeks leave and someone who works 50%FTE gets £30k/3 weeks leave then yes of course there is a claim but how is there a claim if its pro rated?
Genuinely intrigued. I'll be looking out for it being heard since it doesn't look like the OP is going to explain but if it even succeeds at first instance (because surely it would go to appeal - particularly with a law firm Respondent), it would create such a tidal wave through businesses up and down the country that there would undoubtedly be policy based intervention. You'd also be banging the nails in the coffin of part time working pretty much forever. No business would be able to afford it so there would be no benefit to allowing it.