OPINION
HILLMAN, District Judge.
Before the Court is plaintiffs’ motion for conditional certification for a collective action pursuant to the Fair Labor Standards Act (“FLSA”), and motion for class certification pursuant to Rule 23 regarding their New Jersey state law wage claims. For reasons explained below, plaintiffs’ motion for conditional certification will be granted, and their motion for class certification will be denied without prejudice.
I. BACKGROUND
Plaintiffs are current or former employees of defendant Durand Glass Manufacturing Company. (“Durand”). Durand is a producer of commercial glassware and ceramics located in Millville, New Jersey and is an employer within the meaning of 29 U.S.C. § 203(d).1 Its production facility [640]*640operates 24 hours a day, seven days a week, and employs over 500 individuals paid on an hourly basis.
Durand employees are required to wear pei'sonal protective equipment (“PPE”), gather any required equipment, supplies or tools, and report to work prior to their shift time, sometimes discussing work tasks to be performed with the employee whose shift was ending. After their shift ends, some Durand employees are required to remain in their production location until relieved or until outstanding work assignments or work-related duties are completed, return work equipment, and take off or doff their PPE. Plaintiffs allege that the required pre- and post-shift tasks, such as donning and doffing PPE, constitute unpaid overtime recoverable under FLSA and New Jersey Wage Laws.
Prior to July 2012, Durand paid only for hours worked between scheduled shift-start and shift-end times, or for overtime if pre-approved by management. After July 2012, Durand instituted a “seven minute” rounding policy. Under the rounding policy, if employees clocked in seven minutes or less before their scheduled start time, their paid start time would be rounded forward to their scheduled start time. If employees clocked seven minutes or less after their scheduled end time, their paid end time would be rounded back to their scheduled end time. The seven minute grace period is not paid compensation. If, however, the employee clocks in more than seven minutes before his scheduled start time, or more than seven minutes after his scheduled end time, the employee could be penalized if he did not get prior approval for overtime. With approval, the employee would get paid overtime.
II. JURISDICTION
Plaintiffs bring this action on behalf of themselves and others “similarly situated” to remedy alleged violations of the Fair Labor Standards Act, 29 U.S.C. § 201 et seq., and therefore this Court exercises subject matter jurisdiction pursuant to 28 U.S.C. § 1331 (federal question jurisdiction). The Court exercises jurisdiction over plaintiffs’ pendant state law wage claims pursuant to 28 U.S.C. § 1367.2
III. DISCUSSION
Plaintiffs allege that defendant violated the Fair Labor Standards Act (“FLSA”), the New Jersey Wage and Hour Law and [641]*641the New Jersey Payment Law (“NJ Wage”) by failing to pay named plaintiffs and those similarly situated overtime compensation, as well as for certain hours worked. Plaintiffs seek conditional certification for a collection action pursuant to the FLSA, and also seek class certification pursuant to Fed. R. Civ. P. 23.
A. Conditional Certification 1. Standard for Conditional Certification for a Collection Action ' Pursuant to the FLSA
The Fair Labor Standards Act (“FLSA”) governs hour and wage practices and requires, among other things, that employers pay covered employees at least a specified minimum wage for work performed and overtime pay for hours worked in excess of forty hours per week. See 29 U.S.C. §§ 202, 207. Plaintiffs seek to sue on behalf of themselves and other employees similarly situated pursuant to Section 216(b) of the FLSA.3 See 29 U.S.C. § 216(b), ruled unconstitutional on other grounds in Alden v. Maine 527 U.S. 706, 712, 119 S.Ct. 2240, 144 L.Ed.2d 636 (1999) (“finding unconstitutional provision of FLSA authorizing private actions against states in state courts without their consent”).
Unlike a class certification pursuant to Fed. R. Civ. P. 23, under the FLSA, “conditional certification” does not produce a class with an independent legal status, or join additional parties to the action. Genesis Healthcare Carp. v. Symczyk, — U.S. -, 133 S.Ct. 1523, 1530, 185 L.Ed.2d 636 (2013); Pearsall-Dineen v. Freedom Mortg. Corp., 27 F.Supp.3d 567, 570, 2014 WL 2873878, at *2 (D.N.J. June 25, 2014) (“The conditional certification process, despite sometimes borrowing the language of class action certification from Federal Rule of Civil Procedure 23, is not really a certification but instead is a ‘district court’s exercise of [its] discretionary power ... to facilitate the sending of notice to potential class members.’ ”) (citations omitted).
The Third Circuit has outlined a two-step process for deciding whether an action may properly proceed as a collective action under the FLSA. See Camesi v. University of Pittsburgh Medical Center, 729 F.3d 239, 243 (3d Cir.2013) (citing Zavala v. Wal-Mart Stores Inc., 691 F.3d 527, 535 (3d Cir.2012)). In the first stage, “[ajpplying a ‘fairly lenient standard’ ... the court makes a preliminary determination as to whether the named plaintiffs have made a ‘modest factual showing’ that the employees identified in their complaint are ‘similarly situated.’ ” Id. “If the plaintiffs have satisfied their burden, the court will ‘conditionally certify’ the collective action for the purpose of facilitating notice to potential opt-in plaintiffs and conducting pre-trial discovery.” Id. Rather than opting-out as is done in a traditional class action lawsuit, in an FLSA class action, potential class members must opt-in by providing written consent filed with the Court. Manning v. Gold Belt Falcon, LLC, 817 F.Supp.2d 451, 452 (D.N.J.2011) (stating that under the FLSA there are “two pertinent requirements to maintain a collective action: 1) each Plaintiff must manifest his written consent, and 2) Plaintiffs attorney must file that consent with the Court.”).
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OPINION
HILLMAN, District Judge.
Before the Court is plaintiffs’ motion for conditional certification for a collective action pursuant to the Fair Labor Standards Act (“FLSA”), and motion for class certification pursuant to Rule 23 regarding their New Jersey state law wage claims. For reasons explained below, plaintiffs’ motion for conditional certification will be granted, and their motion for class certification will be denied without prejudice.
I. BACKGROUND
Plaintiffs are current or former employees of defendant Durand Glass Manufacturing Company. (“Durand”). Durand is a producer of commercial glassware and ceramics located in Millville, New Jersey and is an employer within the meaning of 29 U.S.C. § 203(d).1 Its production facility [640]*640operates 24 hours a day, seven days a week, and employs over 500 individuals paid on an hourly basis.
Durand employees are required to wear pei'sonal protective equipment (“PPE”), gather any required equipment, supplies or tools, and report to work prior to their shift time, sometimes discussing work tasks to be performed with the employee whose shift was ending. After their shift ends, some Durand employees are required to remain in their production location until relieved or until outstanding work assignments or work-related duties are completed, return work equipment, and take off or doff their PPE. Plaintiffs allege that the required pre- and post-shift tasks, such as donning and doffing PPE, constitute unpaid overtime recoverable under FLSA and New Jersey Wage Laws.
Prior to July 2012, Durand paid only for hours worked between scheduled shift-start and shift-end times, or for overtime if pre-approved by management. After July 2012, Durand instituted a “seven minute” rounding policy. Under the rounding policy, if employees clocked in seven minutes or less before their scheduled start time, their paid start time would be rounded forward to their scheduled start time. If employees clocked seven minutes or less after their scheduled end time, their paid end time would be rounded back to their scheduled end time. The seven minute grace period is not paid compensation. If, however, the employee clocks in more than seven minutes before his scheduled start time, or more than seven minutes after his scheduled end time, the employee could be penalized if he did not get prior approval for overtime. With approval, the employee would get paid overtime.
II. JURISDICTION
Plaintiffs bring this action on behalf of themselves and others “similarly situated” to remedy alleged violations of the Fair Labor Standards Act, 29 U.S.C. § 201 et seq., and therefore this Court exercises subject matter jurisdiction pursuant to 28 U.S.C. § 1331 (federal question jurisdiction). The Court exercises jurisdiction over plaintiffs’ pendant state law wage claims pursuant to 28 U.S.C. § 1367.2
III. DISCUSSION
Plaintiffs allege that defendant violated the Fair Labor Standards Act (“FLSA”), the New Jersey Wage and Hour Law and [641]*641the New Jersey Payment Law (“NJ Wage”) by failing to pay named plaintiffs and those similarly situated overtime compensation, as well as for certain hours worked. Plaintiffs seek conditional certification for a collection action pursuant to the FLSA, and also seek class certification pursuant to Fed. R. Civ. P. 23.
A. Conditional Certification 1. Standard for Conditional Certification for a Collection Action ' Pursuant to the FLSA
The Fair Labor Standards Act (“FLSA”) governs hour and wage practices and requires, among other things, that employers pay covered employees at least a specified minimum wage for work performed and overtime pay for hours worked in excess of forty hours per week. See 29 U.S.C. §§ 202, 207. Plaintiffs seek to sue on behalf of themselves and other employees similarly situated pursuant to Section 216(b) of the FLSA.3 See 29 U.S.C. § 216(b), ruled unconstitutional on other grounds in Alden v. Maine 527 U.S. 706, 712, 119 S.Ct. 2240, 144 L.Ed.2d 636 (1999) (“finding unconstitutional provision of FLSA authorizing private actions against states in state courts without their consent”).
Unlike a class certification pursuant to Fed. R. Civ. P. 23, under the FLSA, “conditional certification” does not produce a class with an independent legal status, or join additional parties to the action. Genesis Healthcare Carp. v. Symczyk, — U.S. -, 133 S.Ct. 1523, 1530, 185 L.Ed.2d 636 (2013); Pearsall-Dineen v. Freedom Mortg. Corp., 27 F.Supp.3d 567, 570, 2014 WL 2873878, at *2 (D.N.J. June 25, 2014) (“The conditional certification process, despite sometimes borrowing the language of class action certification from Federal Rule of Civil Procedure 23, is not really a certification but instead is a ‘district court’s exercise of [its] discretionary power ... to facilitate the sending of notice to potential class members.’ ”) (citations omitted).
The Third Circuit has outlined a two-step process for deciding whether an action may properly proceed as a collective action under the FLSA. See Camesi v. University of Pittsburgh Medical Center, 729 F.3d 239, 243 (3d Cir.2013) (citing Zavala v. Wal-Mart Stores Inc., 691 F.3d 527, 535 (3d Cir.2012)). In the first stage, “[ajpplying a ‘fairly lenient standard’ ... the court makes a preliminary determination as to whether the named plaintiffs have made a ‘modest factual showing’ that the employees identified in their complaint are ‘similarly situated.’ ” Id. “If the plaintiffs have satisfied their burden, the court will ‘conditionally certify’ the collective action for the purpose of facilitating notice to potential opt-in plaintiffs and conducting pre-trial discovery.” Id. Rather than opting-out as is done in a traditional class action lawsuit, in an FLSA class action, potential class members must opt-in by providing written consent filed with the Court. Manning v. Gold Belt Falcon, LLC, 817 F.Supp.2d 451, 452 (D.N.J.2011) (stating that under the FLSA there are “two pertinent requirements to maintain a collective action: 1) each Plaintiff must manifest his written consent, and 2) Plaintiffs attorney must file that consent with the Court.”).
In the second stage, “with the benefit of discovery, ‘a court following this approach then makes a conclusive determination as to whether each plaintiff who has opted in to the collective action is in fact similarly situated to the named plaintiff.’ ” [642]*642Camesi 729 F.3d at 243 (citing Symczyk v. Genesis Healthcare Corp., 656 F.3d 189, 193 (3d Cir.2011), rev’d on other grounds, Symczyk, 133 S.Ct. at 1526); Kronick v. bebe Stores, Inc., No. 07-4514, 2008 WL 4546368 at *1 (D.N.J. Oct. 2, 2008) (“In the second stage, after more evidence is available, the court makes a final determination as to whether the plaintiff is similarly situated to the rest of the class.”). “This step may be triggered by the plaintiffs’ motion for ‘final certification,’ by the defendants’ motion for ‘decertification,’ or, commonly, by both.” Id. “If the plaintiffs succeed in carrying their heavier burden at this stage, the case may proceed on the merits as a collective action.” Id.; Armstrong v. Weichert Realtors, No. 05-3120, 2006 WL 1455781, at *1 (D.N.J. May 19, 2006) (In order for a collective action to proceed under § 216(b): (1) named plaintiffs must show that potential class .members are “similarly situated” and (2) members must affirmatively “opt-in.”). The plaintiff bears the burden of proving that class members are similarly situated. See Troncone v. Velahos, No. 10-2961, 2011 WL 3236219, at *4 (D.N.J: July 28, 2011).
2. Plaintiffs’ Motion for Conditional Certification for “Opt-in” Collective Action Pursuant to the FLSA
At the first stage, plaintiffs have met the fairly lenient evidentiary standard to establish conditional certification for a collective action pursuant to the FLSA. Plaintiffs have submitted sworn declarations attesting to procedures they follow during their employment with Durand. The facts attested to in the declarations support plaintiffs’ contentions that they engaged in some work related activity pri- or to the beginning of their shifts and at the conclusion of their shifts. All of Du-rand’s employees are paid hourly. They are all currently subject to the same seven minute rule and rounding policies. They are all subject to the same overtime policy. Although the amount of PPE required of each position can vary, all of Durand’s employees are required to wear some PPE prior to beginning their shift, which they remove at the conclusion of their shift. Accordingly, plaintiffs have provided the requisite factual nexus between their situation and the situation of other employees sufficient to determine that they are similarly situated.
Therefore, plaintiffs’ motion for conditional certification for an “opt-in” collection action pursuant to the FLSA will be granted.
B. Class Certification
1. Standard for Class Certification Pursuant to Rule 23
In addition to their FLSA claim, plaintiffs brought NJ Wage claims. Pursuant to their state law wage claims, plaintiffs seek Rule 23 class certification in which plaintiffs must “opt-out” of the class, rather than “opt-in” under the FLSA’s conditional certification. Federal Rule of Civil Procedure 23 permits “[o]ne or more members of a class [to] sue ... as representative parties on behalf of all members” of the class. Fed.R.Civ.P. 23(a). Accordingly, Rule 23 “sets forth a two-pronged standard for class certification.” Franco v. Conn. Gen. Life Ins. Co., 289 F.R.D. 121, 129 (D.N.J.2013) (citing Fed. R. Crv. P. 23). “To obtain certification, a plaintiff must demonstrate that the putative class meets the threshold requirements of Rule 23(a) as well as one of the three Rule 23(b) categories under which [the plaintiff] wishes to proceed on behalf of a class.” Id.; see also (Wal-Mart Stores, Inc. v. Dukes, - U.S. -, 131 S.Ct. 2541, 2548-49, 180 L.Ed.2d 374 (2011)). On a motion for class certification, “[i]t is plaintiffs burden to show that a class action is a [643]*643proper vehicle for th[e] lawsuit.” Hayes v. Wal-Mart Stores, Inc., 725 F.3d 349, 354 (3d Cir.2013); see also Comcast Corp. v. Behrend, — U.S. — , 133 S.Ct. 1426, 1432, 185 L.Ed.2d 515 (2013) (“The class action is ‘an exception to the usual rule that litigation is conducted by and on behalf of the individual named parties only.’ ... To come within the exception, a party seeking to maintain a class action ‘must affirmatively demonstrate his compliance’ with Rule 23.”) (citations omitted). “[PJlaintiffs wishing to proceed through a class action must actually prove — not simply plead — that their proposed class satisfies each requirement of Rule 23.... ” Halliburton Co. v. Erica P. John Fund, Inc., — U.S. -, 134 S.Ct. 2398, 2412, 189 L.Ed.2d 339 (2014).
As the Third Circuit has explained, the “party seeking class certification must first establish the four requirements of Rule 23(a): ‘(1) the class is so numerous that joinder of all members is impracticable [numerosity]; (2) there are questions of law or fact common to the class [commonality]; (3) the claims or defenses of the representative parties are typical of the claims or defenses of the class [typicality]; and (4) the representative parties will fairly and adequately protect the interests of the class [adequacy].’ ” In re Hydrogen Peroxide Antitrust Litig., 552 F.3d 305, 309 n. 6 (3d Cir.2008). “[Class] certification is proper only if the trial court is satisfied, after a rigorous analysis, that the prerequisites of Rule 23(a) have been satisfied. Frequently that rigorous analysis will entail some overlap with the merits of the plaintiffs underlying claim. That cannot be helped.” Hayes, 725 F.3d at 353-54 (citing Dukes, 131 S.Ct. at 2551) (internal quotations omitted).
Where the plaintiff satisfies all four prerequisites under Rule 23(a) — nu-merosity, commonality, typicality, and adequacy — “a class of one of three types [set forth in Rule 23(b) ] (each with additional requirements) may be certified.” In re Hydrogen Peroxide, 552 F.3d at 309 n. 6. Plaintiffs in this case seek certification under Rule 23(b)(3). A class action may be maintained under Rule 23(b)(3) if “the court finds that the questions of law or fact common to class members predominate over any questions affecting only individual members, and that a class action is superior to other available methods for fairly and efficiently adjudicating the controversy.” Fed. R. Civ. P. 23(b)(3). “Factual determinations supporting Rule 23 findings must be made by a preponderance of the evidence.” In re Hydrogen Peroxide, 552 F.3d at 307. “ ‘A party’s assurance to the court that it intends or plans to meet the requirements is insufficient.’ ” Hayes, 725 F.3d at 354 (citing In re Hydrogen Peroxide, 552 F.3d at 307).
In addition to Rule 23(b)(3) requirements, the Third Circuit has increasingly emphasized the importance of ascertaina-bility of the class with respect to classes certified under Rule 23(b)(3). See, e.g., Carrera v. Bayer Corp., 727 F.3d 300, 305-08 (3d Cir.2013); Hayes, 725 F.3d at 354-56; Marcus v. BMW of N. Am., LLC, 687 F.3d 583, 592-94 (3d Cir.2012).4 Beginning in Marcus, the Third Circuit recognized that “an essential prerequisite of a class action, at least with respect to actions [brought] under Rule 23(b)(3), is that the class must be currently and readily ascertainable based on objective criteria.” Marcus, 687 F.3d at 592-93; see also Hayes, 725 F.3d at 355 (“As ‘an essential prerequisite’ to class certification, ... plaintiff must show by a preponderance of [644]*644the evidence that the class is ascertainable”) (citations omitted); Carrera, 727 F.3d at 306 (“a plaintiff must show, by a preponderance of the evidence, that the class is ‘currently and readily ascertainable based on objective criteria,’ and a trial court must undertake a rigorous analysis of the evidence to determine if the standard is met.”) (citations omitted).
The Third Circuit has determined that several important objectives are served by virtue of the ascertainability requirement for Rule 23(b)(3) class actions: (1) the requirement “eliminates ‘serious administrative burdens that are incongruous with the efficiencies expected in a class action’ by insisting on the easy identification of class members[;]” (2) the requirement “protects absent class members by facilitating the ‘best notice practicable’ under Rule 23(c)(2) [;]” and (3) the requirement “protects defendants by ensuring that those persons who will be bound by the final judgment are clearly identifiable.” Marcus, 687 F.3d at 593; see also Hayes, 725 F.3d at 355.
Ascertainability thus consists of “two important elements”: (1) “the class must be defined with reference to objective criteria[;]” and (2) “there must be a reliable and administratively feasible mechanism for determining whether puta-five class members fall within the class definition.”5 Hayes, 725 F.3d at 355 (citing Marcus, 687 F.3d at 593-94). Ascer-tainability necessitates an inquiry into “whether the defendants’ records can ascertain class members, and if not, whether there is a reliable, administratively feasible alternative.”6 Id. at 594. The Third Circuit has made clear that where “class members are impossible to identify without extensive and individualized fact-finding or ‘mini-trials,’ then a class action is inappropriate.” Marcus, 687 F.3d at 593.
When considering a plaintiffs proposed mechanism for ascertaining the class, the Third Circuit has cautioned “against approving a method that would amount to no more than ascertaining by potential class members’ say so[,]” by, for example, “having potential class members submit affidavits” that they meet the class definition. Marcus, 687 F.3d at 594. Without “further indicia of reliability,” permitting such a method would essentially force defendants “to accept as true absent persons’ declarations that they are members of the class,” raising “serious due process implications.” Id. A “petition for class certification will founder if the only proof of class membership is the say-so of putative class members or if ascertaining [645]*645the class requires extensive and individualized fact-finding.” Hayes, 725 F.3d at 356.
2. Plaintiffs’ Motion for Class Certification
Plaintiffs seek to certify a class of all former and current hourly production employees of defendant. With regard to all of the former and current employees’ pre- and post-shift duties, plaintiffs have not met the ascertainability requirement of this proposed class because they have not established that each employee is subject to the same pre-shift and post-shift routine or duties. Although all proposed class members are required to wear safety glasses and ear plugs, some employees are required to wear boots, some require tools, and some are required have “shift report” conversations with the person they are relieving from their shift. However, to determine how much time each employee should be compensated for pre- and post-shift activities, the Court would have to determine each employee’s, or at least each group of employees with the same job description, duties. Undertaking this type of individual analysis makes it difficult to ascertain the class. For example, if an employee’s pre-shift duties took over eight minutes, then presumably, that employee would have gotten paid (if her overtime was approved), while the employee whose pre-shift duties took her less than five minutes, her time would have been “rounded up” and she would not have gotten paid. The unknown is how long it takes each employee to perform her pre- or post-shift duties which directly impacts whether the employee got paid. Plaintiffs have not presented a proposed class in which the Court can ascertain the employees’ pre- and post-shift routine, including the donning and doffing of PPE, without undergoing an individual analysis of each employee and how much time it took her to complete such duties. The sworn declarations submitted by plaintiffs indicate that each plaintiff performed slightly different pre- and post-shift duties than her fellow coworkers.7 Although they all wear some [646]*646PPE, some wear more than others and some engage in more duties outside their shift time than others. There is also no indication how long it takes to get from the clock where the employees punch in and out to their respective work stations.
Likewise, it is not possible to ascertain a class of all former and current hourly employees prior to the commencement of the seven minute rule. The facts show that some employees would punch in upon arrival and then proceed to get a cup of coffee, maybe breakfast, or socialize prior to beginning of their work shift, as well as don PPE. There is no way to group all the employees in one class without undergoing an individualized inquiry with each employee as to her pre-shift routine. Although plaintiffs complain that it was Du-rand’s failure to properly account for time worked by allowing employees to clock in well ahead of their start time, plaintiffs have not presented evidence that, prior to the seven minute rule being implemented, all the employees in the proposed class, after clocking-in, engaged in work that went uncompensated (with the exception of the donning and doffing of PPE which has been addressed above).8
Therefore, plaintiffs have not presented an ascertainable class. See Hayes, 725 F.3d at 354 (plaintiff must show by a preponderance of the evidence that the class is ascertainable which is an essential prerequisite to class certification under Rule 23). The proposed class is not ascertainable with regard to employees who vary in the amount of time required to don or doff PPE depending upon the amount of PPE required and any pre- or post-inspection duties.9 Thus, because plaintiffs have not met the ascertainability requirement, the Court finds that plaintiffs’ proposed class does not meet Rule 23 requirements at this time.
IV. CONCLUSION
For the foregoing reasons, plaintiffs’ motion for conditional certification for a collective action pursuant with regard to their FLSA claim will be granted. Plaintiffs’ motion for class certification pursuant to Rule 23(b)(3) will be denied will be denied without prejudice.
[647]*647An Order consistent with this Opinion will be entered.