Michael C. Buckley
Chief Financial Officer at Robert Half
Thank you, Keith. Hello, everyone.
As Keith just noted, global revenues were $1.473 billion in the fourth quarter. On an as-adjusted basis, fourth quarter Talent Solutions revenues were down 18% year-over-year. U.S. Talent Solutions revenues were $764 million, down 21% from the prior year's fourth quarter. Non-U.S. Talent Solutions revenues were $245 million, down 10% year-over-year. We have 313 talent solutions locations worldwide, including 89 locations in 18 countries outside of the United States.
In the fourth quarter, there were 61.1 billing days compared to 61.2 billing days in the same quarter one year ago. The first quarter of 2024 has 62.8 billing days compared to 63.3 billing days during the first quarter of 2023. Billing days for the remaining three quarters of 2024 will be 63.5, 64.1 and 61.6 for a total of 252 billing days in the year.
Currency exchange rate fluctuations during the fourth quarter had the effect of increasing reported year-over-year total revenues by $11 million, $8 million for Talent Solutions and $3 million for Protiviti. Contract Talent Solutions bill rates for the fourth quarter increased 3.7% compared to one year ago, adjusted for changes in the mix of revenues by functional specialization, currency and country. This rate for the third quarter was 4.6%.
Now let's take a closer look at the results for Protiviti. Global revenues in the fourth quarter were $464 million, $372 million of that is from the United States and $92 million is from outside of the United States. On an as-adjusted basis, global fourth quarter Protiviti revenues were down 8% versus the year ago period. U.S. Protiviti revenues were down 7%, while non-U.S. Protiviti revenues were down 9%. Protiviti and its independently owned member firms serve clients through a network of 89 locations in 29 countries.
Turning now to gross margin. In Contract Talent Solutions, fourth quarter gross margin was 39.7% of applicable revenues versus 39.9% in the fourth quarter 1 year ago. Conversion revenues for contract to hire were 3.4% of revenues in the quarter compared to 3.7% of revenues in the quarter one year ago. Our permanent placement revenues in the fourth quarter were 12% of consolidated Talent Solutions revenues versus 12.7% in the same quarter one year ago.
When combined with contract Talent Solutions gross margin, overall gross margin for Talent Solutions was 46.9% compared to 47.5% of applicable revenues in the fourth quarter last year. For Protiviti, gross margin was 23.9% of Protiviti revenues compared to 27.2% of Protiviti revenues one year ago.
Adjusted for deferred compensation-related classification impacts, gross margin for Protiviti was 25.9 % for the quarter just ended compared to 28% last year. We ended 2023 with 10,500 full-time Protiviti employees and contractors, down 9.6% from the prior year.
Moving on to selling, general and administrative costs. Enterprise SG&A costs were 35.1% of global revenues in the fourth quarter compared to 31.6% in the same quarter one year ago. Adjusted for deferred compensation-related classification impacts, enterprise SG&A costs were 32.5% for the quarter just ended compared to 30.4% last year.
Talent Solutions' SG&A costs were 44.6% of Talent Solutions revenues in the fourth quarter versus 38.9% in the fourth quarter of 2022 -- I'm sorry, in the fourth quarter of 2023. Adjusted for deferred compensation related classification impacts, Talent Solutions SG&A costs were 40.8% in the fourth -- in the quarter just ended compared to 37.2% last year. The lower mix of permanent placement revenues this quarter versus one year ago had the effect of decreasing the quarter's adjusted SG&A ratios by 0.4 percentage points. We ended 2023 with 8,000 full-time internal employees in our Talent Solutions divisions, down 13.8% from the prior year.
Fourth quarter SG&A costs for Protiviti were 14.5% of Protiviti revenues compared to 13.6% of revenues last year. Operating income for the fourth quarter was $67 million. Adjusted for deferred compensation related classification impacts, combined segment income was $114 million in the fourth quarter. Combined segment margin was 7.8%.
Fourth quarter segment income from our Talent Solutions divisions was $61 million with a segment margin of 6.1%. The Segment income for Protiviti in the fourth quarter was $53 million, with a segment margin of 11.4%. Our fourth quarter tax rate was 27%, the same as one year ago.
At the end of the fourth quarter, accounts receivable were $861 million and implied days sales outstanding, or DSO, was 52.6 days.
Before we move on to first quarter guidance, let's review some of the monthly reviewed revenue trends we saw in the fourth quarter and so far in January, all adjusted for currency and billing days. Contract Talent Solutions exited the fourth quarter with December revenues down 17% versus the prior year compared to an 18% decrease for the full quarter.
Revenues for the first three weeks of January were down 17% compared to the same period last year. On a week-on-week sequential basis, the rates of decline continued to narrow during the quarter, a pattern that began last quarter. Permanent placement revenues in December were down 22% versus December 2022. This compares to a 23% decrease for the full quarter. For the first four weeks of January, permanent placement revenues were down 25% compared to the same period in 2023.
We provide this information so you have insight into some of the trends we saw during the fourth quarter and into January. But as you know, these are very brief time periods. We caution against reading too much into them. With that in mind, we offer the following first quarter guidance: Revenues, $1.44 billion to $1.54 billion; Income per share, $0.54 to $0.68; Midpoint revenues of $1.49 billion are 13% lower than in the same period in 2023 on an as-adjusted basis.
The major financial assumptions underlying the midpoint of these estimates are as follows: revenue growth year-over year on an as-adjusted basis. Talent Solutions down 14% to 19%, Protiviti down 3% to 6%. Overall, down 10% to 15%. Gross margin percentage for contract talent 38% to 41%; Protiviti, 20% to 22%. Overall 37% to 39%.
SG&A as a percentage of revenues, excluding deferred compensation classification impacts, Talent Solutions, 40 % to 42%; Protiviti, 15% to 17% and overall, 32% to 34 %. Segment income for Talent Solutions, 4% to 7%; Protiviti, 4% to 7%, overall 4% to 7%. Tax rate, 29% to 30%. Shares 104 million to 105 million.
2024 capital expenditures and capitalized cloud computing costs, $90 million to $110 million with $15 million to $20 million in the first quarter.
Protiviti's First-quarter segment income guidance includes the seasonal impact of annual staff promotions and compensation increases all of which become fully effective on January 1st. This produces a sequential decline in midpoint estimated segment margin of six percentage points, which is consistent with the four to seven point decline experienced in most of the last 10 years.
We limit our guidance to one quarter. All estimates we provide on this call are subject to the risks mentioned in today's press release and in our SEC filings.
Now I will turn the call-back over to Keith.