Mmmm...never heard of Unions giving bennies to mngmt. The employer giving bennies to Mgmt Yes, but the Unions, no I have never heard of that. Come to think of it, most of the bennies are provided/paid for by the employer, not the Union, but I digress.
Anyhoo, in my neck of the woods, Union bennies don't kick in until after the "probation period" which is typically 3 mths, but can be as long as 9 mths. Of course, it goes without saying that Union dues are taken from your paycheck from day 1. The bennies are vague and poorly described, but heck, the Canucks have Healthcare. Every insurance policy I ever signed, the coverage started as soon as the first payment was made. Just saying, you know.
I do know that in Vegas many hotels are now declaring that Union membership is optional. Of course what they don't say that Union dues are subtracted from your paycheck from day 1. This is their right, if it is a Union shop they can get a slice of everyone's paycheck, and there's nothing you can do about it, other than walk out.
Around here, Union wages don't mean much. Say the job advertisement claims that wages are $22.00 hr. for a Union shop. Now you don't think they'll actually pay that, do you? No, you start at 75% or even lower than the advertised wage. After probation period, IF you can get 160 hrs/ mth consecutively for 2 months, you can jump to the next pay scale, which would be maybe 82-85% of the advertised rate. Doesn't happen very often for the "new guy". After that, if you can swing 160 hrs/ mth consecutively again, you might just get the golden ring, the advertised rate. Thing is, most Hospitality Unions I've worked for, or with, are "seniority based" NOT "merit based". Which basically means it doesn't matter how good you cook, or what your attitude is, or even if you can get along with co workers. It just means if you have seniority, you get your 160 hrs/mth and the other guys scramble to get 20-30 hrs/ week. A lot of guys I know-- or knew, were working 2 or even three jobs, and just waiting for the phone call to come so they could get an extra shift or two at their Union job, and maybe, 5 years down the road, actually get that second or third wage increase.